National Institute for Personnel Research. (1953). Journal of the National Institute for Personnel Research: Tydskrif van de Nasionale Institute vir personeelnarvorsing. National Institute for Personnel Research.
Chicago-referens (17:e uppl.)National Institute for Personnel Research. Journal of the National Institute for Personnel Research: Tydskrif Van De Nasionale Institute Vir Personeelnarvorsing. Johannesburg: National Institute for Personnel Research, 1953.
MLA-referens (9:e uppl.)National Institute for Personnel Research. Journal of the National Institute for Personnel Research: Tydskrif Van De Nasionale Institute Vir Personeelnarvorsing. National Institute for Personnel Research, 1953.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.