Παραπομπή σε μορφή APA (7η εκδ.)

Graham & Trotman, Guttieres, M., & Ruffolo, U. The law and practice relating to pollution control in Italy (2nd ed.). Graham & Trotman.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Graham & Trotman, M. Guttieres, και U. Ruffolo. The Law and Practice Relating to Pollution Control in Italy. 2nd ed. London: Graham & Trotman.

Παραπομπή σε μορφή MLA (8th εκδ.)

Graham & Trotman, et al. The Law and Practice Relating to Pollution Control in Italy. 2nd ed. Graham & Trotman.