Blalock, H. M. (1964). Causal inferences in nonexperimental research. University of North Carolina Press.
Chicago Edition CitationBlalock, Hubert M. Causal Inferences in Nonexperimental Research. Chapel Hill: University of North Carolina Press, 1964.
MLA Edition CitationBlalock, Hubert M. Causal Inferences in Nonexperimental Research. University of North Carolina Press, 1964.
Warning: These citations may not always be 100% accurate.