APA

Mullings L., . (1987). Cities of the United States. New York: Columbia University.

Chicago

Mullings Leith, . 1987. Cities of the United States. New York: Columbia University.

Harvard

Mullings L., . (1987). Cities of the United States. New York: Columbia University.

MLA

Mullings Leith, . Cities of the United States. New York: Columbia University. 1987.