APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

Blalock, Hubert M. Casual Inferences in Nonexperimental Research. Norton, 1972.