APA

Van Etten G., Arkell C. & Van Etten C. (1980). The severely and profoundly handicapped: programs, methods, and materials. St. Louis: Mosby Co.

Chicago

Van Etten Glen, Arkell Claudia and Van Etten Carlene. 1980. The severely and profoundly handicapped: programs, methods, and materials. St. Louis: Mosby Co.

Harvard

Van Etten G., Arkell C. and Van Etten C. (1980). The severely and profoundly handicapped: programs, methods, and materials. St. Louis: Mosby Co.

MLA

Van Etten Glen, Arkell Claudia and Van Etten Carlene. The severely and profoundly handicapped: programs, methods, and materials. St. Louis: Mosby Co. 1980.