Παραπομπή σε μορφή APA (7η εκδ.)

Vries, H. d. (1988). Species and varieties: Their origin by mutation : lectures delivered at the University of California. Garland Pub..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Vries, Hugo de. Species and Varieties: Their Origin by Mutation : Lectures Delivered at the University of California. New York: Garland Pub., 1988.

Παραπομπή σε μορφή MLA (8th εκδ.)

Vries, Hugo de. Species and Varieties: Their Origin by Mutation : Lectures Delivered at the University of California. Garland Pub., 1988.