APA

Nicholson J. L., . (1951). Air transportation management: its practices and policies. New York: Wiley.

Chicago

Nicholson Joseph L, . 1951. Air transportation management: its practices and policies. New York: Wiley.

Harvard

Nicholson J. L., . (1951). Air transportation management: its practices and policies. New York: Wiley.

MLA

Nicholson Joseph L, . Air transportation management: its practices and policies. New York: Wiley. 1951.