APA aipamena

De Leon, H. S. (2005). Textbook on the Philippine constitution (2005 edition.). Rex Book Store.

Chicago Style aipamena

De Leon, Hector S. Textbook on the Philippine Constitution. 2005 edition. Manila: Rex Book Store, 2005.

MLA aipamena

De Leon, Hector S. Textbook on the Philippine Constitution. 2005 edition. Rex Book Store, 2005.

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