Chapman, L. (1974). English grammar and exercises: Book three. Longman.
Cita Chicago (17th ed.)Chapman, L.R.H. English Grammar and Exercises: Book Three. London: Longman, 1974.
Cita MLA (9th ed.)Chapman, L.R.H. English Grammar and Exercises: Book Three. Longman, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.