DANIELS A. (1982). BASIC SYSTEMS ANALYSIS. PITMAN PUBLICATIONS.
Lua i Stíl Chicago (17ú heag.)DANIELS A. BASIC SYSTEMS ANALYSIS. LONDON: PITMAN PUBLICATIONS, 1982.
Lua MLA (9ú heag.)DANIELS A. BASIC SYSTEMS ANALYSIS. PITMAN PUBLICATIONS, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.