APA-referens

Swingle, D. B. (1934). Textbook of systematic botany (2.).

Chicago-stil citat

Swingle, Deane B. Textbook of Systematic Botany. 2. McGraw-Hill Book Co., New York, 1934.

MLA-referens

Swingle, Deane B. Textbook of Systematic Botany. 2. 1934.