Dyfyniad APA

Long, D. D., & Holle, M. C. (1997). Macro systems in the social environment. F.E. Peacock Publishers.

Dyfyniad Arddull Chicago

Long, Dennis D., and Marla C. Holle. Macro Systems in the Social Environment. Itasca, Ill: F.E. Peacock Publishers, 1997.

Dyfyniad MLA

Long, Dennis D., and Marla C. Holle. Macro Systems in the Social Environment. F.E. Peacock Publishers, 1997.

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