Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Grüger, E. (1970). The development of the vegetation of southern Illinois since late illinoian time (preliminary report).- Paris.

Chicago Citation Edition Citation

Grüger, Eberhard. The Development of the Vegetation of Southern Illinois Since Late Illinoian Time (preliminary Report).- Paris. 1970.

MLA Citation Edition Citation

Grüger, Eberhard. The Development of the Vegetation of Southern Illinois Since Late Illinoian Time (preliminary Report).- Paris. 1970.