APA ציטוט

Valacich, J. S. (2006). Essentials of systems analysis and design. America: Pearson Prentice Hall.

Trích dẫn kiểu Chicago

Valacich, Joseph S. Essentials of Systems Analysis and Design. America: Pearson Prentice Hall, 2006.

ציטוט MLA

Valacich, Joseph S. Essentials of Systems Analysis and Design. America: Pearson Prentice Hall, 2006.