Gaya APA

Wielkiewics, R, M, /, C, C, R. (1989). Training and habilitating developmentally disabled people: an introduction. . Newbury Park dsl: Newbury Park dsl Sage.

Gaya MLA

Wielkiewics, Richard, M., /, Calvert,, Christiane, R.X.. "Training and habilitating developmentally disabled people: an introduction. ". Newbury Park dsl: Newbury Park dsl Sage, 1989. Buku.