Gaya APA

abdullah, H., lewis, A, R. (1997). Psychological : Testing And Assessment (Ninth Edition) (Edisi 9). Boston: Allyn and Bacon.

Gaya MLA

abdullah, Hamid., lewis, Aiken, R.. "Psychological : Testing And Assessment (Ninth Edition)". Edisi 9 Boston: Allyn and Bacon, 1997. Text.