Monette, D.R, Sullivan, T.J and Dejong, C.R, Applied Social Research : By Duane R. Monette, Thomas J. Sullivan and Cornell R. Dejong . - 7th Ed. - Delhi Cengage Learning India Pvt. Ltd. 2008 - xxv;531p. ISBN: 978-0-495-60363-4 Dewey Class. No.: Y;f / P8