Cita APA (7a ed.)

Alexander, L. G. (1974). Mainline: Progress B. Students' book. Longman.

Cita Chicago Style (17a ed.)

Alexander, L. G. Mainline: Progress B. Students' Book. London: Longman, 1974.

Cita MLA (9a ed.)

Alexander, L. G. Mainline: Progress B. Students' Book. Longman, 1974.