APA (7th ed.) Citation

Gibbs, R. D. (1950). Botany: An evolutionary approach. Blakiston.

Chicago Style (17th ed.) Citation

Gibbs, Ronald Darnley. Botany: An Evolutionary Approach. Philadelphia: Blakiston, 1950.

MLA (9th ed.) Citation

Gibbs, Ronald Darnley. Botany: An Evolutionary Approach. Blakiston, 1950.