Milson, A. J., Altoff, P., Bockenhauer, M. H., Smith, J., Smith, M. W. 1., Moore, D. W., & Haynes, C. (2013). World cultures and geography ([Middle school, survey student edition].). Boston: National Geographic Learning, Cengage Learning.

Milson, Andrew J., Peggy Altoff, Mark H. Bockenhauer, Janet Smith, Michael William 1954- Smith, David W. Moore, and Charles Haynes. World Cultures and Geography. [Middle school, survey student edition]. Boston: National Geographic Learning, Cengage Learning, 2013.

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