Alfonso, I. C. B. (2023). A history of the Sarangani Islands 1521-1921. Project Saysay Inc.
Chicagoスタイル(17版)引用形式Alfonso, Ian Christopher B. A History of the Sarangani Islands 1521-1921. Quezon City: Project Saysay Inc, 2023.
MLA(9版)引用形式Alfonso, Ian Christopher B. A History of the Sarangani Islands 1521-1921. Project Saysay Inc, 2023.
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