Παραπομπή σε μορφή APA (7η εκδ.)

De Blij, H. J. (1995). The earth: An introduction to its physical and human geography (4th ed.). John Wiley & Sons, Incorporated.

Παραπομπή σε μορφή Chicago (17η εκδ.)

De Blij, Harm J. The Earth: An Introduction to Its Physical and Human Geography. 4th ed. New York, NY: John Wiley & Sons, Incorporated, 1995.

Παραπομπή σε μορφή MLA (8th εκδ.)

De Blij, Harm J. The Earth: An Introduction to Its Physical and Human Geography. 4th ed. John Wiley & Sons, Incorporated, 1995.