APA (7e ed.) Bronvermelding

Douglas, E. J. (1979). Managerial economics: Theory, practice, and problems. Prentice-Hall.

Chicago (17e ed.) Bronvermelding

Douglas, Evan J. Managerial Economics: Theory, Practice, and Problems. Englewood Cliffs, N.J.: Prentice-Hall, 1979.

MLA (9e ed.) Bronvermelding

Douglas, Evan J. Managerial Economics: Theory, Practice, and Problems. Prentice-Hall, 1979.