Gaya APA

Chamot, A, U., O'Malley, J, M. (1994). The calla handbook : implementing the cognitive academic language learning approach . New York: Longman.

Gaya MLA

Chamot, Anna, Uhl., O'Malley, J., Michael. "The calla handbook : implementing the cognitive academic language learning approach". New York: Longman, 1994. Text.