Fred N Kerlinger. Foundations of behavioural research (2nd.). Delhi.
Chicago Edition CitationFred N Kerlinger. Foundations of Behavioural Research. 2nd. Delhi.
MLA Edition CitationFred N Kerlinger. Foundations of Behavioural Research. 2nd. Delhi.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.