Gaya APA

SMALDINO, S., SIMONSON, M. (2003). TEACHING and learning at a distance: (2nd ed.). New Jersey: Upper Saddle River.

Gaya MLA

SMALDINO, Sharon., SIMONSON, Michael. "TEACHING and learning at a distance:". 2nd ed. New Jersey: Upper Saddle River, 2003. Buku.