Cita APA

Alexander, L. G. (1969). First things first; an integrated course for beginners. Longman.

Citación estilo Chicago

Alexander, L. G. First Things First; an Integrated Course for Beginners. London: Longman, 1969.

Cita MLA

Alexander, L. G. First Things First; an Integrated Course for Beginners. London: Longman, 1969.

Precaución: Estas citas no son 100% exactas.