APA (7th ed.) Citation

Knop, J., Mednick, S. A., & Schulsinger, F. (1981). Longitudinal research, methods and uses in behavioral science. M. Nijhoff Pub.

Chicago Style (17th ed.) Citation

Knop, Joachim, Sarnoff A. Mednick, and Fini Schulsinger. Longitudinal Research, Methods and Uses in Behavioral Science. Boston: M. Nijhoff Pub, 1981.

MLA (9th ed.) Citation

Knop, Joachim, et al. Longitudinal Research, Methods and Uses in Behavioral Science. M. Nijhoff Pub, 1981.