Frankfort-Nachmias, Chava. Research methods in the social sciences / Chava Frankfort-Nachmias, David Nachmias. - 5th ed. - London : Arnold, 1996. - xxi, 600 p. ISBN: 0340662263 : Subjects--Topical Terms: Social sciences--Research methods. LC Class. No.: H62 / .F73 1996