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.
Čikaški stil citiranja (17. izdanje)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 način citiranja (9. izdanje)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.
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