Παραπομπή σε μορφή APA (7η εκδ.)

Zagwijn, W. H. (1960). Aspects of the Pliocene and early Pleistocene vegetation in the Netherlands. Utig.-Mij. "Ernest van Aelst".

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zagwijn, Waldo Heliodoor. Aspects of the Pliocene and Early Pleistocene Vegetation in the Netherlands. Maastricht: Utig.-Mij. "Ernest van Aelst", 1960.

Παραπομπή σε μορφή MLA (8th εκδ.)

Zagwijn, Waldo Heliodoor. Aspects of the Pliocene and Early Pleistocene Vegetation in the Netherlands. Utig.-Mij. "Ernest van Aelst", 1960.