Παραπομπή APA

Williams, A. A. (1970). Basic subjects for the slow learner. Methuen.

Παραπομπή Chicago Style

Williams, Alec A. Basic Subjects for the Slow Learner. London: Methuen, 1970.

Παραπομπή MLA

Williams, Alec A. Basic Subjects for the Slow Learner. Methuen, 1970.