एपीए उद्धरण

Lee, B., & Lee, B. (1979). Introducing systems analysis and design v.1. Galgotia Book source.

शिकागो स्टाइल उद्धरण

Lee, Barry.ed, और Barry Lee. Introducing Systems Analysis and Design V.1. New Delhi.: Galgotia Book source, 1979.

एमएलए उद्धरण

Lee, Barry.ed, और Barry Lee. Introducing Systems Analysis and Design V.1. Galgotia Book source, 1979.