APA引文

Duke, I. (2004). The everything sign language book: American sigh language made easy. Adams Media.

Chicago Style (17th ed.) Citation

Duke, Irene. The Everything Sign Language Book: American Sigh Language Made Easy. Avon, Mass: Adams Media, 2004.

MLA引文

Duke, Irene. The Everything Sign Language Book: American Sigh Language Made Easy. Adams Media, 2004.