APA ציטוט

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

Trích dẫn kiểu Chicago

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

ציטוט MLA

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