Samuelson, W. F. (1999). Managerial economics. The Dryden.
Chicago Style (17th ed.) ZitazioaSamuelson, William F. Managerial Economics. Fort Worth: The Dryden, 1999.
MLA (9th ed.) ZitazioaSamuelson, William F. Managerial Economics. The Dryden, 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.