APA (7th ed.) Citation

Robertson, C. C. (1931). The cultivation of Mexican pines in the Union of South Africa: With notes on the species and their original habitat.

Chicago Style (17th ed.) Citation

Robertson, Colin Charles. The Cultivation of Mexican Pines in the Union of South Africa: With Notes on the Species and Their Original Habitat. [London], 1931.

MLA (9th ed.) Citation

Robertson, Colin Charles. The Cultivation of Mexican Pines in the Union of South Africa: With Notes on the Species and Their Original Habitat. 1931.