Cita APA (7th ed.)

Ellingstad, V., & Heimstra, N. W. (1974). Methods in the study of human behavior. Brooks/Cole.

Cita Chicago (17th ed.)

Ellingstad, Vernon, i Norman W. Heimstra. Methods in the Study of Human Behavior. Monterey: Brooks/Cole, 1974.

Cita MLA (9th ed.)

Ellingstad, Vernon, i Norman W. Heimstra. Methods in the Study of Human Behavior. Brooks/Cole, 1974.