Citazione Stile APA (7a Edizione)

National Geographic Society & Appleby, J. O. (2006). The American journey: To World War I. Glencoe/McGraw-Hill.

Citazione stile Chigago Style (17a edizione)

National Geographic Society e Joyce Oldham Appleby. The American Journey: To World War I. New York [u.a.]: Glencoe/McGraw-Hill, 2006.

Citatione MLA (9a ed.)

National Geographic Society e Joyce Oldham Appleby. The American Journey: To World War I. Glencoe/McGraw-Hill, 2006.