Cita APA (7a ed.)
Alexander, L. (1979). First things first student's book: <an> integrated course for beginners. Longman.
Cita Chicago Style (17a ed.)
Alexander, L.G. First Things First Student's Book: <an> Integrated Course for Beginners. London: Longman, 1979.
Cita MLA (9a ed.)
Alexander, L.G. First Things First Student's Book: <an> Integrated Course for Beginners. Longman, 1979.
Precaución: Estas citas no son 100% exactas.