Citazione Stile APA (7a Edizione)

Hers, D., & Tasa, D. (2014). Mcknights physical geography : a landscape: Appreciation (11th ed.). Person.

Citazione stile Chigago Style (17a edizione)

Hers, Darrel, e Dannis Tasa. Mcknights Physical Geography : a Landscape: Appreciation. 11th ed. Edinburgh: Person, 2014.

Citatione MLA (9a ed.)

Hers, Darrel, e Dannis Tasa. Mcknights Physical Geography : a Landscape: Appreciation. 11th ed. Person, 2014.