Cita APA

O'Connell, S. (1989). Focus on proficiency. Collings: London and Galasgow.

Chicago Style Citation

O'Connell, Sue. Focus On Proficiency. Collings: London and Galasgow, 1989.

Cita MLA

O'Connell, Sue. Focus On Proficiency. Collings: London and Galasgow, 1989.

Atenció: Aquestes cites poden no estar 100% correctes.