APA (7th ed.) Citation

Blalock, H. M. (1964). Causal inferences in Nonexperimental research (2a. ed.). The University of North Carolina Press.

Chicago Style (17th ed.) Citation

Blalock, Hubert M. Causal Inferences in Nonexperimental Research. 2a. ed. Chapel Hill: The University of North Carolina Press, 1964.

MLA (9th ed.) Citation

Blalock, Hubert M. Causal Inferences in Nonexperimental Research. 2a. ed. The University of North Carolina Press, 1964.