APA (7e ed.) Bronvermelding

Erdtman, G., & Verdoorn, F. (1943). An introduction to pollen analysis (First edition.). Chronica Botanica Company.

Chicago (17e ed.) Bronvermelding

Erdtman, G., en Frans Verdoorn. An Introduction to Pollen Analysis. First edition. Waltham: Chronica Botanica Company, 1943.

MLA (8e ed.) Bronvermelding

Erdtman, G., en Frans Verdoorn. An Introduction to Pollen Analysis. First edition. Chronica Botanica Company, 1943.