Não informado. (1972). Evaluation. Minneapolis Medical Research Foundation, Program Evaluation Project.
Chicago-referens (17:e uppl.)Não informado. Evaluation. Minneapolis, Minn: Minneapolis Medical Research Foundation, Program Evaluation Project, 1972.
MLA-referens (8:e uppl.)Não informado. Evaluation. Minneapolis Medical Research Foundation, Program Evaluation Project, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.