APA Style

(penerbit), G, I., (penerbit), A, C. (). The Encyclopedia Americana : International Edition Volume 21 : Orley to Photoengraving . Danbury: .

MLA Style

(penerbit), Grolier, Incorporated., (penerbit), Americana, Corporation. "The Encyclopedia Americana : International Edition Volume 21 : Orley to Photoengraving". Danbury: , . Text.