Citazione Stile APA (7a Edizione)

Milson, A. J., Altoff, P., Bockenhauer, M. H., Smith, J., Smith, M. W., Moore, D. W., & Haynes, C. (2013). World cultures and geography ([Middle school, survey student edition].). National Geographic Learning, Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Milson, Andrew J., Peggy Altoff, Mark H. Bockenhauer, Janet Smith, Michael William Smith, David W. Moore, e Charles Haynes. World Cultures and Geography. [Middle school, survey student edition]. [Boston, MA]: National Geographic Learning, Cengage Learning, 2013.

Citatione MLA (9a ed.)

Milson, Andrew J., et al. World Cultures and Geography. [Middle school, survey student edition]. National Geographic Learning, Cengage Learning, 2013.