APA (7th ed.) Citation

Ore, O. (1967). Invitation to number theory. Random House.

Chicago Style (17th ed.) Citation

Ore, Oystein. Invitation to Number Theory. [New York]: Random House, 1967.

MLA (9th ed.) Citation

Ore, Oystein. Invitation to Number Theory. Random House, 1967.

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