APA

Hansen, . (2014). Encounter on the Great Plains. : Oxford University PressOxford University Press.

Chicago

Hansen, . 2014. Encounter on the Great Plains. : Oxford University PressOxford University Press.

Harvard

Hansen, . (2014). Encounter on the Great Plains. : Oxford University PressOxford University Press.

MLA

Hansen, . Encounter on the Great Plains. : Oxford University PressOxford University Press. 2014.