Gaya APA
Allen, Vernon L. (1970).
Psychological Factors in Poverty (1).
Chicago:
Markham Publishing Company.
Gaya Chicago
Allen, Vernon L.
Psychological Factors in Poverty.
1
Chicago:
Markham Publishing Company,
1970.
Text.
Gaya MLA
Allen, Vernon L.
Psychological Factors in Poverty.
1
Chicago:
Markham Publishing Company,
1970.
Text.
Gaya Turabian
Allen, Vernon L.
Psychological Factors in Poverty.
1
Chicago:
Markham Publishing Company,
1970.
Print.