BITTEL, L. R. (1991). Right on Time!: The complete guide for time-pressured managers. McGraw-Hill Inc.
Lua i Stíl Chicago (17ú heag.)BITTEL, Lester R. Right on Time!: The Complete Guide for Time-pressured Managers. McGraw-Hill Inc, 1991.
Lua MLA (8ú heag.)BITTEL, Lester R. Right on Time!: The Complete Guide for Time-pressured Managers. McGraw-Hill Inc, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.