Parker, S. P. (1994). World Geographical Encyclopedia: V. 2: Americas. Saint Joseph's University.
Lua i Stíl Chicago (17ú heag.)Parker, Sybil P. World Geographical Encyclopedia: V. 2: Americas. Saint Joseph's University, 1994.
Lua MLA (8ú heag.)Parker, Sybil P. World Geographical Encyclopedia: V. 2: Americas. Saint Joseph's University, 1994.
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