Cita APA

Gatenby, E. V. (1960). A direct method english course (2nd ed.). London: Longman.

Citación estilo Chicago

Gatenby, E. V. A Direct Method English Course. 2nd ed. London: Longman, 1960.

Cita MLA

Gatenby, E. V. A Direct Method English Course. 2nd ed. London: Longman, 1960.