Cita APA (7a ed.)
Dawson, N. (1989). Supplementary Grammmar Exercises 2 (2.impression.). Longman Group UK.
Cita Chicago Style (17a ed.)
Dawson, Nick. Supplementary Grammmar Exercises 2. 2.impression. Harlow: Longman Group UK, 1989.
Cita MLA (9a ed.)
Dawson, Nick. Supplementary Grammmar Exercises 2. 2.impression. Longman Group UK, 1989.
Precaución: Estas citas no son 100% exactas.