Departemen Pendidikan Nasional. 2005. Peraturan Pemerintah Nomor 19 Tahun 2005 tentang Standar Nasional Pendidikan. Jakarta.
Foong, P. Y. 2000. Using Short Open Ended Mathematics Question to ProÂÂmote Thinking and Understanding, Singapore: NIE.
Freudenthal, H. 1991. Revisiting mathematics education. Dordrecht: Kluwer A.P.
Hiebert, J. & Carpenter, T.P. 1998. Problem Solving as a Basis for Reform of Curriculum and Instruction: The Case of Mathematics. Educational Research 25(4), 12-21.
Land, S.M. 2000. Cognitive requirements for learning with open-ended learnÂÂing environments. Etr &D-Educational Technology Research and DeÂÂvelopment 48:61-78.
Lynch, C. L., Wolcott, S. K., & Huber, G. E. 2001. Tutorial for optimizing and documenting open-ended problem solving skills [On-line]. Available: http://home. apex. net/~leehaven.
Maturana, H.M & Varela,F.J 1984. Der Baum der Erkenntnis: Die bilogischen Wurzeln menschlichen Erkennens. Muenchen: Scherz Verlag.
Parnes, S. J. 1992. Source book for creative problem solving. Buffalo, NY· Creative Education Foundation Press.
Patton, earl V. & David S. Sawichi. 1986. Basic Methods of Policy Analysis and Planning. New Jersey: Prentice Hall, Englewood Cliffs.
Schoenfeld, A. 1994. What do we know about curriculum?. In: the Journal of Mathematical Behaviour 13, p. 55-80.
Schoenfeld, A. 1997. Learning to think mathematically: Problem solving, metacogniton, and sense making in Mathematics. In: D.A. Grouws(Ed.), Handbook of research on mathematics teaching and learning (pp 334-367), New York: Macmillan.
Shimada, S. & Becker, P., 1997. The Open-Ended Approach: A New Proposal for Teaching Mathematics. NY: NCTM.
Soedjadi, R. & Sutarto Hadi, 2004. PMRJ dan KBK dalam Era Otonomi Pendidikan. Buletin PMRJ, Edisi III Januari 2004, hal. 1.
Schroeder, T.L., & Lester, F.K. 1989. Developing understanding in mathematÂÂics via problem solving. In PR. Trafton (Ed.), New directions for elÂÂementary school mathematics (pp. 31-56). Reston:NCTM.
Sternberg, R. J. & Lubart, T. I. 1991. An investment theory of creativity and its development. Human Development, 34, 1-31.
Sudiarta, P 2003a. Impulse der Schule des Konstruktivismus Fuer Neuere Konzepte des Lehrers und Lernens, Aachen: Shaker Verlag Muenchen.
Sudiarta, P. 2003b. Impulse der Schule des Konstruktivismus Fuer Neuere Konzepte des Lehrens und Lernens: Am Beispiel Mathematikunterricht. Dissertation: Uni Osnabrueck, Jerman.
Sudiarta, P. 2003c. Pembangunan Konsep Matematika Melalui "Open-Ended Problem": Studi Kasus Pada Sekolah Dasar Elisabeth Osnabrueck Jerman, Jurnal Pendidikan dan Pengajaran, IKIP Negeri Singaraja: Edisi Oktober 2003
Sudiarta, P. 2005a. Pengembangan Kompetensi Berpikir Divergen dan Kritis Melalui Pemecahan Masalah Matematika Open-Ended, Jurnal Pendidikan dan Pengajaran IKIP Negeri Singaraja, Edisi Mei 2005.
Sudiarta, P. 2005b. Paradigma Baru Pembelajaran Matematika: Refleksi Terhadap Tuntutan Kurikulum Berbasis Kompetensi, Jurnal Pendidikan dan Pengajaran IKIP Negeri Singaraja, Edisi Juli 2005.
Sudiarta, P. 2005c. Pengembangan Model Pembelajaran Matematika Berorientasi Pemecahan Masalah Kontekstual Open-Ended, Jurnal Pendidikan dan Pengajaran IKIP Negeri Singaraja, Edisi Oktober 2005.