Dyfyniad APA

Parsons, T. (1977). The evolution of societies. Englewood Cliff: Prentice-Hall.

Dyfyniad Arddull Chicago

Parsons, Talcott. The Evolution of Societies. Englewood Cliff: Prentice-Hall, 1977.

Dyfyniad MLA

Parsons, Talcott. The Evolution of Societies. Englewood Cliff: Prentice-Hall, 1977.

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