Cita APA (7th ed.)
(1986). Grammar and composition: Fourth course (Teachers edition.). Houghton.
Cita Chicago (17th ed.)
Grammar and Composition: Fourth Course. Teachers edition. Boston: Houghton, 1986.
Cita MLA (9th ed.)
Grammar and Composition: Fourth Course. Teachers edition. Houghton, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.