Singh, A. K. (1978). Development of differential personality scale in Hindi. Janaki Prakashan.
Chicago-referens (17:e uppl.)Singh, Arun Kumar. Development of Differential Personality Scale in Hindi. Patna: Janaki Prakashan, 1978.
MLA-referens (8:e uppl.)Singh, Arun Kumar. Development of Differential Personality Scale in Hindi. Janaki Prakashan, 1978.
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