APA (7th ed.) Citation

Campbell, J. P., Daft, R. L., & Hulin, C. L. (1982). What to study: Generating and developing research questions. Sage.

Chicago Style (17th ed.) Citation

Campbell, John Paul, Richard L. Daft, and Charles L. Hulin. What to Study: Generating and Developing Research Questions. Beverly Hills: Sage, 1982.

MLA (9th ed.) Citation

Campbell, John Paul, et al. What to Study: Generating and Developing Research Questions. Sage, 1982.