Cita APA (7th ed.)

Rojas, J. N., & Curry, R. A. (2003). Gramática esencial: Reference handbook (Second edition.). Editorial Houghton Mifflin Company.

Cita Chicago (17th ed.)

Rojas, Jorge Nelson, i Richard A. Curry. Gramática Esencial: Reference Handbook. Second edition. Boston: Editorial Houghton Mifflin Company, 2003.

Cita MLA (8th ed.)

Rojas, Jorge Nelson, i Richard A. Curry. Gramática Esencial: Reference Handbook. Second edition. Editorial Houghton Mifflin Company, 2003.