Nachmias, David. Research methods in the social sciences / David Nachmias, Chava Nachmias. - 3rd edItion - New York : St. Martin's Press, 1987. - xvii, 589 pages : illustration ; 24 cm. Includes bibliographies and indexes. ISBN: 031267271 Pbk. Np. Subjects--Topical Terms: Social sciences--Methodology. LC Class. No.: H 61 N32 1987 CIRC.