ALLEN , W. (1985). LIVING ENG. STRUCTURE FOR SCHOOLS. ORIENT LONGMAN.
Cita Chicago (17th ed.)ALLEN , W.S. LIVING ENG. STRUCTURE FOR SCHOOLS. BOMBAY: ORIENT LONGMAN, 1985.
Cita MLA (9th ed.)ALLEN , W.S. LIVING ENG. STRUCTURE FOR SCHOOLS. ORIENT LONGMAN, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.