Gaya APA

Incorporated, G. (1988). The Encyclopedia Americana Volume 6: Cathedrals to Civil War (Pertama). Danbury: Grolier Incorporated.

Gaya MLA

Incorporated, Grolier. "The Encyclopedia Americana Volume 6: Cathedrals to Civil War". Pertama Danbury: Grolier Incorporated, 1988. Text.