APA (7th ed.) Citation

Khinchin, A. (1952). Three pearls of number theory. Graylock Press.

Chicago Style (17th ed.) Citation

Khinchin, A.Y. Three Pearls of Number Theory. New York: Graylock Press, 1952.

MLA (9th ed.) Citation

Khinchin, A.Y. Three Pearls of Number Theory. Graylock Press, 1952.