Dyfyniad APA

Asher, H. B., & Lewis-Beck, M. S. (1983). Causal modeling (2nd ed.). Sage Publications.

Dyfyniad Arddull Chicago

Asher, Herbert B., and Michael S. Lewis-Beck. Causal Modeling. 2nd ed. Beverly Hills ;: London: Sage Publications, 1983.

Dyfyniad MLA

Asher, Herbert B., and Michael S. Lewis-Beck. Causal Modeling. 2nd ed. Sage Publications, 1983.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.