APA (7th ed.) Citation

Blalock, H. M. (1972). Causal inferences in nonexperimental research. W. W. Norton.

Chicago Style (17th ed.) Citation

Blalock, Hubert M. Causal Inferences in Nonexperimental Research. New York: W. W. Norton, 1972.

MLA (8th ed.) Citation

Blalock, Hubert M. Causal Inferences in Nonexperimental Research. W. W. Norton, 1972.