APA

Bourne L. S., Simmons J. W. & Bourne L. S. (1978). Systems of cities. New York: Oxford Univ. Press.

Chicago

Bourne Larry S, Simmons J W and Bourne Larry S. 1978. Systems of cities. New York: Oxford Univ. Press.

Harvard

Bourne L. S., Simmons J. W. and Bourne L. S. (1978). Systems of cities. New York: Oxford Univ. Press.

MLA

Bourne Larry S, Simmons J W and Bourne Larry S. Systems of cities. New York: Oxford Univ. Press. 1978.