Cita APA (7a ed.)
Alexander, L. (1983). First Things First: Student's Book An Integrated Course for Beginners (1. ed.). Longman.
Cita Chicago Style (17a ed.)
Alexander, L.G. First Things First: Student's Book An Integrated Course for Beginners. 1. ed. London: Longman, 1983.
Cita MLA (9a ed.)
Alexander, L.G. First Things First: Student's Book An Integrated Course for Beginners. 1. ed. Longman, 1983.
Precaución: Estas citas no son 100% exactas.