Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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