WARD, J. M. (1966). The use of tenses in english (2nd ed.). Longman.
Citación estilo ChicagoWARD, John Milling. The Use of Tenses in English. 2nd ed. London: Longman, 1966.
Cita MLAWARD, John Milling. The Use of Tenses in English. 2nd ed. Longman, 1966.
Warning: These citations may not always be 100% accurate.