Gaya APA

Friend, M., Cook, L. (2010). Interactions : Collaboration Skills For School Professionals / Marilyn Friend, Lynne Cook (Ed.6). Boston: Pearson.

Gaya MLA

Friend, Marilyn., Cook, Lynne.. "Interactions : Collaboration Skills For School Professionals / Marilyn Friend, Lynne Cook". Ed.6 Boston: Pearson, 2010. Buku.