APA (7th ed.) Citation

Papy & Papy, F. (1968). Modern mathematics. Collier-Macmillan.

Chicago Style (17th ed.) Citation

Papy and Frédérique Papy. Modern Mathematics. London: Collier-Macmillan, 1968.

MLA (9th ed.) Citation

Papy and Frédérique Papy. Modern Mathematics. Collier-Macmillan, 1968.

Warning: These citations may not always be 100% accurate.