Gaya APA

Harper, J, E, O, D, J, M, L, L, P, B, E. (2007). Case Studies . : Pearson College Division.

Gaya MLA

Harper, Jeanne, Ellis, Ormrod;, Dinah, Jackson, McGuire;, Linda, L., Pallock;, Brian, E.. "Case Studies". : Pearson College Division, 2007. Text.