Soars, L., Soars, L., & Maris, A. (2010). American Headway 3: The world's most trusted English course. Teacher's book (2a. ed.). Oxford University Press.
Chicagoスタイル(17版)引用形式Soars, Liz, Liz Soars, , Amanda Maris. American Headway 3: The World's Most Trusted English Course. Teacher's Book. 2a. ed. Nueva York: Oxford University Press, 2010.
MLA(9版)引用形式Soars, Liz, et al. American Headway 3: The World's Most Trusted English Course. Teacher's Book. 2a. ed. Oxford University Press, 2010.
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