Cita APA (7a ed.)

Corder, S. P. (1979). An Intermediate English practice book. Longman.

Cita Chicago Style (17a ed.)

Corder, Stephen Pit. An Intermediate English Practice Book. London: Longman, 1979.

Cita MLA (9a ed.)

Corder, Stephen Pit. An Intermediate English Practice Book. Longman, 1979.