Baumol, W. J. (1977). Economic theory and operations analysis (4th ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Baumol, William J. Economic Theory and Operations Analysis. 4th ed. Englewood Cliffs, N.J. ; New Delhi: Prentice-Hall, 1977.
Lua MLA (8ú heag.)Baumol, William J. Economic Theory and Operations Analysis. 4th ed. Prentice-Hall, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.