Gaya APA

al}, D, R, S, {. (2002). The encyclopedia AMERICANA international edition volume 21 : oporto to photoengraving (edisi 1). USA: Grolier Incorporated.

Gaya MLA

al}, Darlene, R, Stille, {et. "The encyclopedia AMERICANA international edition volume 21 : oporto to photoengraving". edisi 1 USA: Grolier Incorporated, 2002. Text.