Cooper, Donald R. Research methods/ by Donald H.McBurney. - 3rd ed. - USA : BROOKS, . c1994. - xvi,496 p. : ill. ; 25 cm. Includes Index. ISBN: 9780534176461 0534176464 Subjects--Topical Terms: Psychology, Experimental--MethodologyPsychology--Research--Methodology Dewey Class. No.: 150.72 / MCR