Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.