Siegel, W. L., & Browstone, D. M. (1978). People management for small business. National Book Store.
Lua i Stíl Chicago (17ú heag.)Siegel, William Laird, agus David M. Browstone. People Management for Small Business. Manila: National Book Store, 1978.
Lua MLA (9ú heag.)Siegel, William Laird, agus David M. Browstone. People Management for Small Business. National Book Store, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.