Gaya APA

Kessler, C. (1992). Cooperative language learning : a teacher's resource book/ Carolyn Kessler, editor . New Jersey: Prentice Hall.

Gaya MLA

Kessler, Carolyn. "Cooperative language learning : a teacher's resource book/ Carolyn Kessler, editor". New Jersey: Prentice Hall, 1992. Text.