Style de citation APA

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

Style de citation Chicago

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

Style de citation MLA

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

Attention : ces citations peuvent ne pas être correctes à 100%.