Cita APA (7th ed.)

(2015). A writer's reference. Bedford/St. Martin's.

Cita Chicago (17th ed.)

A Writer's Reference. Boston [Massachusetts]: Bedford/St. Martin's, 2015.

Cita MLA (9th ed.)

A Writer's Reference. Bedford/St. Martin's, 2015.

Atenció: Aquestes cites poden no estar 100% correctes.