Gaya APA

Richardson, B., Fusco, M, A, C. (1993). The + 10 percent principle : how to get extraordinary result from ordinary people (Cetakan Pertama). : Pfeiffer.

Gaya MLA

Richardson, Barrie., Fusco, Mary, Ann, Castronovo. "The + 10 percent principle : how to get extraordinary result from ordinary people". Cetakan Pertama : Pfeiffer, 1993. Text.