David James Press. The gay and lesbian map & guide of Philadelphia (Ausgabe 1988 - 1989.). David James Press.
Čikaški stil citiranja (17. izdanje)David James Press. The Gay and Lesbian Map & Guide of Philadelphia. Ausgabe 1988 - 1989. New York: David James Press.
MLA način citiranja (8. izdanje)David James Press. The Gay and Lesbian Map & Guide of Philadelphia. Ausgabe 1988 - 1989. David James Press.
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