Παραπομπή σε μορφή APA (7η εκδ.)

Kupchella, C. E., & Hyland, M. C. (1993). Environmental science: Living within the system of nature (3rd ed.). Prentice Hall.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Kupchella, Charles E., και Margaret C. Hyland. Environmental Science: Living Within the System of Nature. 3rd ed. Englewood Cliffs: Prentice Hall, 1993.

Παραπομπή σε μορφή MLA (8th εκδ.)

Kupchella, Charles E., και Margaret C. Hyland. Environmental Science: Living Within the System of Nature. 3rd ed. Prentice Hall, 1993.