APA
Hansen V., Curtis K. R., . (2010). Voyages in world history. Boston, MA: Wadsworth, Cengage Learning.
Chicago
Hansen Valerie, Curtis Kenneth Robert, . 2010. Voyages in world history. Boston, MA: Wadsworth, Cengage Learning.
Harvard
Hansen V., Curtis K. R., . (2010). Voyages in world history. Boston, MA: Wadsworth, Cengage Learning.
MLA
Hansen Valerie, Curtis Kenneth Robert, . Voyages in world history. Boston, MA: Wadsworth, Cengage Learning. 2010.