Ong, M. S. (2018). Legal research and citations of the Philippines (2nd edition.). Rex Book Store.
Lua i Stíl Chicago (17ú heag.)Ong, Milagros Santos-. Legal Research and Citations of the Philippines. 2nd edition. Manila: Rex Book Store, 2018.
Lua MLA (9ú heag.)Ong, Milagros Santos-. Legal Research and Citations of the Philippines. 2nd edition. Rex Book Store, 2018.
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