SELTZ DAVID D. (1981). HOW TO PREPARE EFFECTIVE BUSINESS PROGRAM .... BLUE PRINT. ADDISON-WESLEY.
Lua i Stíl Chicago (17ú heag.)SELTZ DAVID D. HOW TO PREPARE EFFECTIVE BUSINESS PROGRAM .... BLUE PRINT. CALIFORNIA: ADDISON-WESLEY, 1981.
Lua MLA (9ú heag.)SELTZ DAVID D. HOW TO PREPARE EFFECTIVE BUSINESS PROGRAM .... BLUE PRINT. ADDISON-WESLEY, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.