Cita APA (7a ed.)
Alexander, L. G. (1979). Developing Skills 3: An Integrated Course for Intermediate Students (5.vyd.). Longman Group UK.
Cita Chicago Style (17a ed.)
Alexander, Louis George. Developing Skills 3: An Integrated Course for Intermediate Students. 5.vyd. London: Longman Group UK, 1979.
Cita MLA (9a ed.)
Alexander, Louis George. Developing Skills 3: An Integrated Course for Intermediate Students. 5.vyd. Longman Group UK, 1979.
Precaución: Estas citas no son 100% exactas.