Hawryszkiewycz, I. T. (1991). Introduction to systems analysis and design (2nd ed.). Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Hawryszkiewycz, I. T. Introduction to Systems Analysis and Design. 2nd ed. New York: Prentice-Hall, 1991.
Lua MLA (9ú heag.)Hawryszkiewycz, I. T. Introduction to Systems Analysis and Design. 2nd ed. Prentice-Hall, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.