Cita APA (7a ed.)

Alexander, L. (1991). For and against: An oral practice book for advanced students of english. Longman.

Cita Chicago Style (17a ed.)

Alexander, L.G. For and Against: An Oral Practice Book for Advanced Students of English. Essex: Longman, 1991.

Cita MLA (8a ed.)

Alexander, L.G. For and Against: An Oral Practice Book for Advanced Students of English. Longman, 1991.