Dyfyniad APA

(1977). Young students encyclopedia; Vol.1: Aardvark, ancient civilizations. Middletown, Connecticut: Xerox Education.

Dyfyniad Arddull Chicago

Young Students Encyclopedia; Vol.1: Aardvark, Ancient Civilizations. Middletown, Connecticut: Xerox Education, 1977.

Dyfyniad MLA

Young Students Encyclopedia; Vol.1: Aardvark, Ancient Civilizations. Middletown, Connecticut: Xerox Education, 1977.

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