Gaya APA
Methods of social research. (1977).
New York:
Macmillan Publishing Co..
Gaya Chicago
Methods of social research.
.
New York:
Macmillan Publishing Co.,
1977.
Buku.
Gaya MLA
Methods of social research.
.
New York:
Macmillan Publishing Co.,
1977.
Buku.
Gaya Turabian
Methods of social research.
New York:
Macmillan Publishing Co.,
1977.
Buku.