Cita APA

Lehner, K., Schrum, K., & Kelly, T. M. (2009). World history matters: A student guide to world history online. Bedford/St. Martin's.

Citación estilo Chicago

Lehner, Kristin, Kelly Schrum, and T. Mills Kelly. World History Matters: A Student Guide to World History Online. Boston: Bedford/St. Martin's, 2009.

Cita MLA

Lehner, Kristin, et al. World History Matters: A Student Guide to World History Online. Bedford/St. Martin's, 2009.