Gaya APA
POPULATION STUDIES A JOURNAL OF DEMOGRAPHY VOL.31 NO.2 JULY-NO.3 NOVEMBER 1977. ().
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Gaya Chicago
POPULATION STUDIES A JOURNAL OF DEMOGRAPHY VOL.31 NO.2 JULY-NO.3 NOVEMBER 1977.
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Gaya MLA
POPULATION STUDIES A JOURNAL OF DEMOGRAPHY VOL.31 NO.2 JULY-NO.3 NOVEMBER 1977.
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Gaya Turabian
POPULATION STUDIES A JOURNAL OF DEMOGRAPHY VOL.31 NO.2 JULY-NO.3 NOVEMBER 1977.
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