APA

Athearn R. G., . (1971). Union Pacific Country. Lincoln [u.a.]: University of Nebraska Press.

Chicago

Athearn Robert G, . 1971. Union Pacific Country. Lincoln [u.a.]: University of Nebraska Press.

Harvard

Athearn R. G., . (1971). Union Pacific Country. Lincoln [u.a.]: University of Nebraska Press.

MLA

Athearn Robert G, . Union Pacific Country. Lincoln [u.a.]: University of Nebraska Press. 1971.