Ary, Donald. Introduction to research in education / Donald Ary, Lucy Cheser Jacobs, Asghar Razavieh. - 5th ed. - Fort Worth : Harcourt Brace College Publishers, 1996. - xviii, 590 p. : ill. ; 25 cm. Includes bibliographical references and index. ISBN: 0155009826 (pbk.) Subjects--Topical Terms: Education--Research.