APA (7th ed.) Citation

Armstrong, D. F. (1999). Original signs: Gesture, sign, and the sources of language. Gallaudet Univ. Press.

Chicago Style (17th ed.) Citation

Armstrong, David F. Original Signs: Gesture, Sign, and the Sources of Language. Washington, DC: Gallaudet Univ. Press, 1999.

MLA (9th ed.) Citation

Armstrong, David F. Original Signs: Gesture, Sign, and the Sources of Language. Gallaudet Univ. Press, 1999.