APA-referens

Westerfeld, W. F. (1967). Beginning botany: A laboratory study guide designed for the audio tutorial system. Burges publishing co.

Chicago-stil citat

Westerfeld, Walter F. Beginning Botany: A Laboratory Study Guide Designed for the Audio Tutorial System. Minneapohis: Burges publishing co, 1967.

MLA-referens

Westerfeld, Walter F. Beginning Botany: A Laboratory Study Guide Designed for the Audio Tutorial System. Burges publishing co, 1967.