Παραπομπή APA

Bierhorst, D. W. (1971). Morphology of vascular plants. Macmillan Company.

Παραπομπή Chicago Style

Bierhorst, D W. Morphology of Vascular Plants. LOndon: Macmillan Company, 1971.

Παραπομπή MLA

Bierhorst, D W. Morphology of Vascular Plants. Macmillan Company, 1971.