Krentzman, H. C. (1981). Successful management strategies for small business. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Krentzman, Harvey C. Successful Management Strategies for Small Business. Englewood Cliffs, N.J.: Prentice-Hall, 1981.
Lua MLA (8ú heag.)Krentzman, Harvey C. Successful Management Strategies for Small Business. Prentice-Hall, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.