APA (7th ed.) Citation

Orr, J. C. (1960). Studies on triterpenoids. [publisher not identified].

Chicago Style (17th ed.) Citation

Orr, James C. Studies on Triterpenoids. [Place of publication not identified]: [publisher not identified], 1960.

MLA (9th ed.) Citation

Orr, James C. Studies on Triterpenoids. [publisher not identified], 1960.