Cita APA

Ottoson, H. W., & Ottoson, H. W. (1966). Land and people in the Northern plains transition area. Lincoln: University of Nebraska Press.

Citación estilo Chicago

Ottoson, Howard W., y Howard W. Ottoson. Land and People in the Northern Plains Transition Area. Lincoln: University of Nebraska Press, 1966.

Cita MLA

Ottoson, Howard W., y Howard W. Ottoson. Land and People in the Northern Plains Transition Area. Lincoln: University of Nebraska Press, 1966.