Gaya APA
Robertson, Ian. (1981).
Sociology (2).
United State of America:
Worth.
Gaya Chicago
Robertson, Ian.
Sociology.
2
United State of America:
Worth,
1981.
Text.
Gaya MLA
Robertson, Ian.
Sociology.
2
United State of America:
Worth,
1981.
Text.
Gaya Turabian
Robertson, Ian.
Sociology.
2
United State of America:
Worth,
1981.
Print.