APA (7th ed.) Citation

Lucas, C., Bayley, R., & Valli, C. (2003). What's your sign for pizza?: An introduction to variation in American Sign Language. Gallaudet University Press.

Chicago Style (17th ed.) Citation

Lucas, Ceil, Robert Bayley, and Clayton Valli. What's Your Sign for Pizza?: An Introduction to Variation in American Sign Language. Washington, D.C: Gallaudet University Press, 2003.

MLA (8th ed.) Citation

Lucas, Ceil, et al. What's Your Sign for Pizza?: An Introduction to Variation in American Sign Language. Gallaudet University Press, 2003.