APA استشهاد

Burns, T., & Sinfield, S. (2012). Essential study skills (3rd ed.). SAGE.

استشهاد بنمط شيكاغو

Burns, Tom, و Sandra Sinfield. Essential Study Skills. 3rd ed. Los Angeles ; Thousand Oaks, Calif.: SAGE, 2012.

MLA استشهاد

Burns, Tom, و Sandra Sinfield. Essential Study Skills. 3rd ed. SAGE, 2012.