Newell, W., & Paul, F. A. (1983). Basic sign communication. National Association of the deaf.
Chicago Style (17th ed.) ZitazioaNewell, William, eta Frank Allen Paul. Basic Sign Communication. Maryland: National Association of the deaf, 1983.
MLA (9th ed.) ZitazioaNewell, William, eta Frank Allen Paul. Basic Sign Communication. National Association of the deaf, 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.