Blumberg, Boris Business research methods / [Book] Boris Blumberg, Donald R. Cooper, Pamela S. Schindler - พิมพ์ครั้งที่ - Boston : McGraw-Hill Irwin, c2005. - xxii, 596 p. : ill. + 1 CD-Rom Includes index. ISBN: 007710742x 978007710742 Subjects--Topical Terms: Industrial management--Research LC Class. No.: HD30.4 / .B625