Duke, I. (2004). The everything sign language book: American sigh language made easy. Adams Media.
Cita Chicago (17th ed.)Duke, Irene. The Everything Sign Language Book: American Sigh Language Made Easy. Avon, Mass: Adams Media, 2004.
Cita MLA (9th ed.)Duke, Irene. The Everything Sign Language Book: American Sigh Language Made Easy. Adams Media, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.