Gaya APA

pd, D, G, A, M. (1999). Learner strategy use and performance on language tests : Astructural equation modeling approach . Columbia: cambridge univ. press.

Gaya MLA

pd, Dr., Gufron, Amirullah,, M.. "Learner strategy use and performance on language tests : Astructural equation modeling approach". Columbia: cambridge univ. press, 1999. Text.