Παραπομπή σε μορφή APA (7η εκδ.)

Simmons, I. (1991). Earth, air and water: Resources and environment in the late 20th century. Edward Arnold.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Simmons, I.G. Earth, Air and Water: Resources and Environment in the Late 20th Century. London: Edward Arnold, 1991.

Παραπομπή σε μορφή MLA (9th εκδ.)

Simmons, I.G. Earth, Air and Water: Resources and Environment in the Late 20th Century. Edward Arnold, 1991.