Dickey, B. (1986). dBase III for sales professionals. Ashton-Tate Publishing Group.
Lua i Stíl Chicago (17ú heag.)Dickey, Bill. DBase III for Sales Professionals. California: Ashton-Tate Publishing Group, 1986.
Lua MLA (9ú heag.)Dickey, Bill. DBase III for Sales Professionals. Ashton-Tate Publishing Group, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.