Side R. Richard & Wellman G. Guy. (2007). Grammar and Vocabulary for Cambridge Advanced and Proficiency: Fully Updated for the Revised CPE. Harlow, Longman, 2007.
Cita Chicago Style (17a ed.)Side R. Richard y Wellman G. Guy. Grammar and Vocabulary for Cambridge Advanced and Proficiency: Fully Updated for the Revised CPE. Harlow, Longman, 2007, 2007.
Cita MLA (9a ed.)Side R. Richard y Wellman G. Guy. Grammar and Vocabulary for Cambridge Advanced and Proficiency: Fully Updated for the Revised CPE. Harlow, Longman, 2007, 2007.
Precaución: Estas citas no son 100% exactas.