Citazione Stile APA (7a Edizione)

Gatenby, E. V. (1962). A direct method english course, Book V. Longmans.

Citazione stile Chigago Style (17a edizione)

Gatenby, E. V. A Direct Method English Course, Book V. London: Longmans, 1962.

Citatione MLA (9a ed.)

Gatenby, E. V. A Direct Method English Course, Book V. Longmans, 1962.