Dyfyniad APA

(1986). Urban Planning Guide (Rev. ed.). American Society of Civil Engineers.

Dyfyniad Arddull Chicago

Urban Planning Guide. Rev. ed. New York: American Society of Civil Engineers, 1986.

Dyfyniad MLA

Urban Planning Guide. Rev. ed. American Society of Civil Engineers, 1986.

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