APA (7e ed.) Bronvermelding

Gill, F. W., & Bates, G. L. (1949). Airline competition; a study of the effects of competition on the quality and price of airline service and the self-sufficiency of the United States domestic airlines. Division of Research.

Chicago (17e ed.) Bronvermelding

Gill, Frederick W., en Gilbert L. Bates. Airline Competition; a Study of the Effects of Competition on the Quality and Price of Airline Service and the Self-sufficiency of the United States Domestic Airlines. Boston: Division of Research, 1949.

MLA (9e ed.) Bronvermelding

Gill, Frederick W., en Gilbert L. Bates. Airline Competition; a Study of the Effects of Competition on the Quality and Price of Airline Service and the Self-sufficiency of the United States Domestic Airlines. Division of Research, 1949.