Cita APA (7a ed.)
Alexander, L. G. (1967). First Things First Students Book: An Integrated Course for Beginners. Longman Group UK.
Cita Chicago Style (17a ed.)
Alexander, Louis George. First Things First Students Book: An Integrated Course for Beginners. London: Longman Group UK, 1967.
Cita MLA (9a ed.)
Alexander, Louis George. First Things First Students Book: An Integrated Course for Beginners. Longman Group UK, 1967.
Precaución: Estas citas no son 100% exactas.