Gaya APA
The Practice of Social Research . (1998).
[s.l.]:
[s.n.].
Gaya Chicago
The Practice of Social Research .
Ed.8.
[s.l.]:
[s.n.],
1998.
Text.
Gaya MLA
The Practice of Social Research .
Ed.8.
[s.l.]:
[s.n.],
1998.
Text.
Gaya Turabian
The Practice of Social Research .
[s.l.]:
[s.n.],
1998.
Print.