OLDCORN ROGER. (1988). MANAGEMENT: SKILLS AND FUNCTIONS. RUPA & COMPANY.
Lua i Stíl Chicago (17ú heag.)OLDCORN ROGER. MANAGEMENT: SKILLS AND FUNCTIONS. LONDON: RUPA & COMPANY, 1988.
Lua MLA (9ú heag.)OLDCORN ROGER. MANAGEMENT: SKILLS AND FUNCTIONS. RUPA & COMPANY, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.