Παραπομπή σε μορφή APA (7η εκδ.)

Lincoln, S. F. (2006). Challenged Earth: An overview of humanity's stewardship of Earth. Imperial College Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Lincoln, Stephen F. Challenged Earth: An Overview of Humanity's Stewardship of Earth. London: Imperial College Press, 2006.

Παραπομπή σε μορφή MLA (9th εκδ.)

Lincoln, Stephen F. Challenged Earth: An Overview of Humanity's Stewardship of Earth. Imperial College Press, 2006.