Cita APA (7a ed.)

Valacich, J. S., George, J. F., & Hoffer, J. (2015). Essentials of systems analysis and design (Sixth edition, Global edition.). Pearson.

Cita Chicago Style (17a ed.)

Valacich, Joseph S., Joey F. George, y Jeff Hoffer. Essentials of Systems Analysis and Design. Sixth edition, Global edition. Boston, Massachusetts: Pearson, 2015.

Cita MLA (8a ed.)

Valacich, Joseph S., et al. Essentials of Systems Analysis and Design. Sixth edition, Global edition. Pearson, 2015.