APA Citatie

Williams, H. M. (1991). An essential english grammar with usage and composition. Calicut University.

Chicago Style citaat

Williams, H. M. An Essential English Grammar with Usage and Composition. Kozhikode: Calicut University, 1991.

MLA citatie

Williams, H. M. An Essential English Grammar with Usage and Composition. Calicut University, 1991.

Let op: Deze citaties zijn niet altijd 100% accuraat.