APA citiranje

Ann Hirst, & N/a. (1988). Proceedings of the Sixth International Congress on Mathematical Education. Budapest, Hungary: János Bolyai Mathematical Society.

Trích dẫn kiểu Chicago

Ann Hirst, và N/a. Proceedings of the Sixth International Congress On Mathematical Education. Budapest, Hungary: János Bolyai Mathematical Society, 1988.

MLA citiranje

Ann Hirst, và N/a. Proceedings of the Sixth International Congress On Mathematical Education. Budapest, Hungary: János Bolyai Mathematical Society, 1988.