APA (7th ed.) Citation

Shanks, D. (1985). Solved and unsolved problems in number theory. Chelsea.

Chicago Style (17th ed.) Citation

Shanks, Daniel. Solved and Unsolved Problems in Number Theory. New York: Chelsea, 1985.

MLA (8th ed.) Citation

Shanks, Daniel. Solved and Unsolved Problems in Number Theory. Chelsea, 1985.

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