Citazione Stile APA (7a Edizione)

Heggie, J., Hiebert, F. T., Thornton, C. P., McInerney, J., Smith, M. W., Altoff, P., & Moore, D. W. (2016). World history: Great civilizations ([Middle school, student edition - English].). National Geographic Learning, Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Heggie, Jon, Fredrik T. Hiebert, Christopher P. Thornton, Jeremy McInerney, Michael William Smith, Peggy Altoff, e David W. Moore. World History: Great Civilizations. [Middle school, student edition - English]. RR Donnelley, Willard, OH: National Geographic Learning, Cengage Learning, 2016.

Citatione MLA (9a ed.)

Heggie, Jon, et al. World History: Great Civilizations. [Middle school, student edition - English]. National Geographic Learning, Cengage Learning, 2016.