APA (7th ed.) Zitazioa

Williams, J. (2007). American studies: Reading study skills writing. Intermediate (1a. ed.). cambridge University Press.

Chicago Style (17th ed.) Zitazioa

Williams, Jessica. American Studies: Reading Study Skills Writing. Intermediate. 1a. ed. Cambridge: cambridge University Press, 2007.

MLA (9th ed.) Zitazioa

Williams, Jessica. American Studies: Reading Study Skills Writing. Intermediate. 1a. ed. cambridge University Press, 2007.