Παραπομπή APA

Wren, P. (2006). High school english grammar and composition. S.Chand and company.

Παραπομπή Chicago Style

Wren, P.C. High School English Grammar and Composition. New Delhi: S.Chand and company, 2006.

Παραπομπή MLA

Wren, P.C. High School English Grammar and Composition. S.Chand and company, 2006.