Urban Research Methods Unorthodox Beyond the Box.
IS 320 Systems Analysis and Design Notes for Textbook Chapter 5.
Information Gathering: Unobtrusive Methods Systems Analysis and Design, 7e Kendall & Kendall 5 © 2008 Pearson Prentice Hall.
Copyright © 2011 Pearson Education Information Gathering: Unobtrusive Methods Systems Analysis and Design, 8e Kendall & Kendall Global Edition 5.