APA (7th ed.) Citation

International Group for the Psychology of Mathematics Education, Vergnaud, G., Rogalski, J., & Artique, M. (1989). Proceedings of the Annual Conference of the International Group for the Psychology of Mathematics Education (13th, Paris, France, July 9-13, 1989), Volume 2. Distributed by ERIC Clearinghouse.

Chicago Style (17th ed.) Citation

International Group for the Psychology of Mathematics Education, Gérard Vergnaud, Janine Rogalski, and Michele Artique. Proceedings of the Annual Conference of the International Group for the Psychology of Mathematics Education (13th, Paris, France, July 9-13, 1989), Volume 2. [Place of publication not identified]: Distributed by ERIC Clearinghouse, 1989.

MLA (9th ed.) Citation

International Group for the Psychology of Mathematics Education, et al. Proceedings of the Annual Conference of the International Group for the Psychology of Mathematics Education (13th, Paris, France, July 9-13, 1989), Volume 2. Distributed by ERIC Clearinghouse, 1989.