APA (7th ed.) Citation

Honsberger, R. (1970). Ingenuity in mathematics. Mathematical Association of America.

Chicago Style (17th ed.) Citation

Honsberger, Ross. Ingenuity in Mathematics. Washington, DC: Mathematical Association of America, 1970.

MLA (9th ed.) Citation

Honsberger, Ross. Ingenuity in Mathematics. Mathematical Association of America, 1970.

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