Introduction to research in education /
Ary, Donald,author.
Jacobs, Lucy Cheser,author.
Razavieh, Ashgar,author.
Sorensen, Chris,author.
Rev. ed. of: Introduction to research in education / Donald Ary, Lucy Cheser Jacobs, Asghar Razavieh. 6th ed.
Actually published in  Belmont, California.
Includes bibliographical references (p. 641-650) and index.
Education