Παραπομπή APA

Asher, H. B. (1983). Causal modeling (2.). Sage Publications.

Παραπομπή Chicago Style

Asher, Herbert B. Causal Modeling. 2. Newbury Park: Sage Publications, 1983.

Παραπομπή MLA

Asher, Herbert B. Causal Modeling. 2. Sage Publications, 1983.