Παραπομπή σε μορφή APA (7η εκδ.)

Freysen, A. H. J. (1978). Structure and functioning of plant populations. North-Holland Publishing.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Freysen, A. H. J. Structure and Functioning of Plant Populations. Amsterdam: North-Holland Publishing, 1978.

Παραπομπή σε μορφή MLA (9th εκδ.)

Freysen, A. H. J. Structure and Functioning of Plant Populations. North-Holland Publishing, 1978.