Gaya APA

Richardson, B., Fusco, M, A, C. (1993). The Plus 10 percent principle : how to get extraordinary results from ordinary poeple . San Diego, CA: Toppan.

Gaya MLA

Richardson, Barrie., Fusco, Mary, Ann, Castronova. "The Plus 10 percent principle : how to get extraordinary results from ordinary poeple". San Diego, CA: Toppan, 1993. Text.