Stouthamer-Loeber, Magda. Data collection and management : a practical guide / Magda Stouthamer-Loeber and Welmoet Bok Van Kammen. - Thousand Oaks, Calif : Sage, 1995. - (152)p ; 23 cm. - Applied social research methods series ; v.39 . ISBN: 0803956568 Nat. Bib. No.: GB95S0391 bnb Dewey Class. No.: 300.72