Cita APA

Hacker, D., & Sommers, N. (2011). A writer's reference with exercises (7. ed.). Boston, Mass.: Bedford/St. Martin's.

Citación estilo Chicago

Hacker, Diana, y Nancy Sommers. A Writer's Reference With Exercises. 7. ed. Boston, Mass.: Bedford/St. Martin's, 2011.

Cita MLA

Hacker, Diana, y Nancy Sommers. A Writer's Reference With Exercises. 7. ed. Boston, Mass.: Bedford/St. Martin's, 2011.