Alfonso, I. C. (2015). Revisiting the sources of the founding of an early Spanish town: The case of Calumpit, Bulacan. Journal of Philippine local history and heritage.
Citace podle Chicago (17th ed.)Alfonso, Ian Christopher. "Revisiting the Sources of the Founding of an Early Spanish Town: The Case of Calumpit, Bulacan." Journal of Philippine Local History and Heritage 2015.
Citace podle MLA (9th ed.)Alfonso, Ian Christopher. "Revisiting the Sources of the Founding of an Early Spanish Town: The Case of Calumpit, Bulacan." Journal of Philippine Local History and Heritage, 2015.
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