O'Sullivan, Elizabethann. Research methods for public administrators / Elizabethann OʼSullivan, Gary R. Rassel. - 2nd ed. - White Plains, N.Y. : Longman Publishers USA, c1995. - xiii, 490 p. : ill. ; 24 cm. Includes bibliographical references and index. ISBN: 0801311721 Subjects--Topical Terms: Public administration--Research--Methodology. Dewey Class. No.: 354.27 / OSR 1989