Dyfyniad APA

Hoffer, J. A., George, J. F., & Valacich, J. S. (2002). Modern Systems Analysis & Design (2nd ed.). Pearson Education.

Dyfyniad Arddull Chicago

Hoffer, Jeffrey A., Joey F. George, and Joseph S. Valacich. Modern Systems Analysis & Design. 2nd ed. New Delhi: Pearson Education, 2002.

Dyfyniad MLA

Hoffer, Jeffrey A., et al. Modern Systems Analysis & Design. 2nd ed. Pearson Education, 2002.

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