APA (7e ed.) Bronvermelding

Bonvillian, J. D., & Nelson-Metlay, V. (2020). Simplified signs: A manual sign-communication system for special populations. OpenBook Publishers.

Chicago (17e ed.) Bronvermelding

Bonvillian, John D., en Val Nelson-Metlay. Simplified Signs: A Manual Sign-communication System for Special Populations. Cambridge, England: OpenBook Publishers, 2020.

MLA (9e ed.) Bronvermelding

Bonvillian, John D., en Val Nelson-Metlay. Simplified Signs: A Manual Sign-communication System for Special Populations. OpenBook Publishers, 2020.