Prodromou L. Luke. (2007). Grammar and Vocabulary for First Certificate. Harlow, Longman, 2007.
Cita Chicago (17th ed.)Prodromou L. Luke. Grammar and Vocabulary for First Certificate. Harlow, Longman, 2007, 2007.
Cita MLA (9th ed.)Prodromou L. Luke. Grammar and Vocabulary for First Certificate. Harlow, Longman, 2007, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.