Dyfyniad APA

Duignan, P. (1980). The United States in the 1980's (Abridged ed.). Addison-Wesley.

Dyfyniad Arddull Chicago

Duignan, Peter. The United States in the 1980's. Abridged ed. Reading, Mass: Addison-Wesley, 1980.

Dyfyniad MLA

Duignan, Peter. The United States in the 1980's. Abridged ed. Addison-Wesley, 1980.

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