Cita APA (7a ed.)

Fried-Booth, D. L. (1997). Richmond First Certificate course: Student's book. Richmond.

Cita Chicago Style (17a ed.)

Fried-Booth, Diana L. Richmond First Certificate Course: Student's Book. London: Richmond, 1997.

Cita MLA (9a ed.)

Fried-Booth, Diana L. Richmond First Certificate Course: Student's Book. Richmond, 1997.