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

APA Zitierstil

Janssen, R. E. (1939). Leaves and stems from fossil forests: A handbook of the paleobotanical collections in the Illinois State Museum. Springfield-IL: Illinois State Museum.

Chicago Zitierstil

Janssen, Raymond E. Leaves and Stems From Fossil Forests: A Handbook of the Paleobotanical Collections in the Illinois State Museum. Springfield-IL: Illinois State Museum, 1939.

MLA Zitierstil

Janssen, Raymond E. Leaves and Stems From Fossil Forests: A Handbook of the Paleobotanical Collections in the Illinois State Museum. Springfield-IL: Illinois State Museum, 1939.