Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

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