Gaya APA

Nilson, C. (1994). Peer Training : Improved Perfomance One By One (Cet. Pertama). United States of America: Prentice Hall.

Gaya MLA

Nilson, Carolyn. "Peer Training : Improved Perfomance One By One". Cet. Pertama United States of America: Prentice Hall, 1994. BUKU.