Cita APA (7a ed.)

Pritchard, G. (1998). Smile please 1: Pupil's book. Heinemann.

Cita Chicago Style (17a ed.)

Pritchard, Gabby. Smile Please 1: Pupil's Book. Oxford: Heinemann, 1998.

Cita MLA (8a ed.)

Pritchard, Gabby. Smile Please 1: Pupil's Book. Heinemann, 1998.