MASSIE, J. L. (1987). Essentials of management. -- 4th ed. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)MASSIE, Joseph L. Essentials of Management. -- 4th Ed. Englewood Cliffs: Prentice-Hall, 1987.
Lua MLA (9ú heag.)MASSIE, Joseph L. Essentials of Management. -- 4th Ed. Prentice-Hall, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.