CLELAND, D. I., & CLELAND, D. I. (1975). Systems Analysis And Project Management Second Edition/ David I. Cleland. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)CLELAND, David I., agus David I. CLELAND. Systems Analysis And Project Management Second Edition/ David I. Cleland. McGraw-Hill, 1975.
Lua MLA (8ú heag.)CLELAND, David I., agus David I. CLELAND. Systems Analysis And Project Management Second Edition/ David I. Cleland. McGraw-Hill, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.