Citazione Stile APA (7a Edizione)

Cunningham, W. a. B. W. S., & Saigo, B. W. (2001). Environmental science: A global concern (Sixth Edition.). McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

Cunningham, William and Barbara Woodworth Saigo, e Barbara Woodworth Saigo. Environmental Science: A Global Concern. Sixth Edition. Boston: McGraw-Hill, 2001.

Citatione MLA (9a ed.)

Cunningham, William and Barbara Woodworth Saigo, e Barbara Woodworth Saigo. Environmental Science: A Global Concern. Sixth Edition. McGraw-Hill, 2001.