APA (7th ed.) Citation

Wickelgren, W. A. (1995). How to solve mathematical problems. Dover publications.

Chicago Style (17th ed.) Citation

Wickelgren, Wayne A. How to Solve Mathematical Problems. New York: Dover publications, 1995.

MLA (9th ed.) Citation

Wickelgren, Wayne A. How to Solve Mathematical Problems. Dover publications, 1995.

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