APA Alıntı

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

Chicago Stili Alıntı

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

MLA Alıntı

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