GESSNER, R. A. (1984). Manufacturing Infromation Systems Implementation Planning Obert A. Gessner. John Willey & Sons.
Lua i Stíl Chicago (17ú heag.)GESSNER, Robert A. Manufacturing Infromation Systems Implementation Planning Obert A. Gessner. John Willey & Sons, 1984.
Lua MLA (8ú heag.)GESSNER, Robert A. Manufacturing Infromation Systems Implementation Planning Obert A. Gessner. John Willey & Sons, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.