Παραπομπή σε μορφή APA (7η εκδ.)

Schulze, E., Lange, O. L., & Oren, R. (1989). Forest decline and air pollution: A study of spruce (Picea abies) on acid soils. Springer-Verlang.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Schulze, E.-D., O. L. Lange, και Ram Oren. Forest Decline and Air Pollution: A Study of Spruce (Picea Abies) on Acid Soils. Berlin: Springer-Verlang, 1989.

Παραπομπή σε μορφή MLA (8th εκδ.)

Schulze, E.-D., et al. Forest Decline and Air Pollution: A Study of Spruce (Picea Abies) on Acid Soils. Springer-Verlang, 1989.