APA (7e ed.) Bronvermelding

Baumol, W. J. (1991). Economics: Principles and policy (Fifth edition.). Harcourt Brace Jovanovich.

Chicago (17e ed.) Bronvermelding

Baumol, William J. Economics: Principles and Policy. Fifth edition. San Diego: Harcourt Brace Jovanovich, 1991.

MLA (8e ed.) Bronvermelding

Baumol, William J. Economics: Principles and Policy. Fifth edition. Harcourt Brace Jovanovich, 1991.