Research design in social research /
De Vaus, D. A.
Research design in social research / David A. de Vaus. - London ; Thousand Oaks, Calif. : SAGE, 2001. - xvii, 279 p. : ill. ; 24 cm.
Research design in social research / David A. de Vaus. - London ; Thousand Oaks, Calif. : SAGE, 2001. - xvii, 279 p. : ill. ; 24 cm.