APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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