Petersen, H. C., & Lewis, W. C. (1986). Managerial economics. Macmillan.
Lua i Stíl Chicago (17ú heag.)Petersen, H. Craig, agus W. Cris Lewis. Managerial Economics. New York: Macmillan, 1986.
Lua MLA (9ú heag.)Petersen, H. Craig, agus W. Cris Lewis. Managerial Economics. Macmillan, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.