Gaya APA
BLACK, J, A., J., I, C, D. (0).
Methods and issues in social research .
Amerika Serikat:
John Wiley r Sons, Inc.
Gaya MLA
BLACK, James, A.., J., II., CHAMPION,, Dean.
"Methods and issues in social research".
Amerika Serikat:
John Wiley r Sons, Inc,
0.
Book.