Cita APA (7a ed.)

Alexander, L. G. (1972). Developing skills: An integrated course for intermediate students (2.ed.). Longman.

Cita Chicago Style (17a ed.)

Alexander, L. G. Developing Skills: An Integrated Course for Intermediate Students. 2.ed. New York, EUA: Longman, 1972.

Cita MLA (9a ed.)

Alexander, L. G. Developing Skills: An Integrated Course for Intermediate Students. 2.ed. Longman, 1972.