Citazione Stile APA (7a Edizione)

Bulliet, R. W., Hirsch, S. W., Johnson, L. L., Crossley, P. K., Headrick, D. R., & Northrup, D. (2019). The earth and its peoples: A global history (Seventh edition.). Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Bulliet, Richard W., Steven W. Hirsch, Lyman L. Johnson, Pamela Kyle Crossley, Daniel R. Headrick, e David Northrup. The Earth and Its Peoples: A Global History. Seventh edition. Boston, MA: Cengage Learning, 2019.

Citatione MLA (9a ed.)

Bulliet, Richard W., et al. The Earth and Its Peoples: A Global History. Seventh edition. Cengage Learning, 2019.