Dyfyniad APA

 Wasson, C. S. (2006).  System analysis, design, and development: Concepts, principles, and practices.  Wiley-Interscience.

Dyfyniad Arddull Chicago

 Wasson, Charles S.  System Analysis, Design, and Development: Concepts, Principles, and Practices.  Wiley-Interscience, 2006.

Dyfyniad MLA

 Wasson, Charles S.  System Analysis, Design, and Development: Concepts, Principles, and Practices.  Wiley-Interscience, 2006.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.