APA (7th ed.) Citation

Chelsea publishing company & Landay, E. (1966). Elementary number theory. Chelsea publishing company.

Chicago Style (17th ed.) Citation

Chelsea publishing company and Edmund Landay. Elementary Number Theory. New York: Chelsea publishing company, 1966.

MLA (8th ed.) Citation

Chelsea publishing company and Edmund Landay. Elementary Number Theory. Chelsea publishing company, 1966.

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