Hackenberg, B. H. (1970). Low income Christian and Muslim populations in Davao City. s.n.].
Chicago-viite (17. p.)Hackenberg, Beverly H. Low Income Christian and Muslim Populations in Davao City. [S.l: s.n.], 1970.
MLA-viite (9. p.)Hackenberg, Beverly H. Low Income Christian and Muslim Populations in Davao City. s.n.], 1970.
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