APA (7e ed.) Bronvermelding

WIELKIEWICZ, R. M., & CALVERT, C. R. (1989). Training And Habilitating Developmentally Disabled People An Introduction / Richard M. Wielkiewicz And Christiane Rx Calvert. Sage.

Chicago (17e ed.) Bronvermelding

WIELKIEWICZ, Richard M., en Christiane R.X CALVERT. Training And Habilitating Developmentally Disabled People An Introduction / Richard M. Wielkiewicz And Christiane Rx Calvert. Sage, 1989.

MLA (8e ed.) Bronvermelding

WIELKIEWICZ, Richard M., en Christiane R.X CALVERT. Training And Habilitating Developmentally Disabled People An Introduction / Richard M. Wielkiewicz And Christiane Rx Calvert. Sage, 1989.