Citadel at Ponce, Porto Rico. Full official history of the war with Spain..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Citadel at Ponce, Porto Rico." Full Official History of the War with Spain. .
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Citadel at Ponce, Porto Rico." Full Official History of the War with Spain., .
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