Duke, I. (2004). The everything sign language book: American sigh language made easy. Adams Media.
Citazione stile Chigago Style (17a edizione)Duke, Irene. The Everything Sign Language Book: American Sigh Language Made Easy. Avon, Mass: Adams Media, 2004.
Citatione MLA (9a ed.)Duke, Irene. The Everything Sign Language Book: American Sigh Language Made Easy. Adams Media, 2004.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.