Citazione Stile APA (7a Edizione)

Trefil, J. S., & Hazen, R. M. (2007). The sciences: An integrated approach (5th ed.). John Wiley & Sons, Inc.

Citazione stile Chigago Style (17a edizione)

Trefil, James S., e Robert M. Hazen. The Sciences: An Integrated Approach. 5th ed. Hoboken, NJ: John Wiley & Sons, Inc, 2007.

Citatione MLA (9a ed.)

Trefil, James S., e Robert M. Hazen. The Sciences: An Integrated Approach. 5th ed. John Wiley & Sons, Inc, 2007.