Cita APA

Hacker, D., & Sommers, N. (2018). A writer's reference (Ninth edition.). Boston, Massachusetts: Bedford/St. Martin's.

Citación estilo Chicago

Hacker, Diana, y Nancy Sommers. A Writer's Reference. Ninth edition. Boston, Massachusetts: Bedford/St. Martin's, 2018.

Cita MLA

Hacker, Diana, y Nancy Sommers. A Writer's Reference. Ninth edition. Boston, Massachusetts: Bedford/St. Martin's, 2018.