Lenkert, E. (2001). Frommer's San Francisco 2002: By Erika Lenkert. Hungry Minds.
Lua i Stíl Chicago (17ú heag.)Lenkert, Erika. Frommer's San Francisco 2002: By Erika Lenkert. New York: Hungry Minds, 2001.
Lua MLA (8ú heag.)Lenkert, Erika. Frommer's San Francisco 2002: By Erika Lenkert. Hungry Minds, 2001.
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