Velasco, K. A. M. (2001). Presidential Decree 851: Ang 13th month pay. Kabayan.
Lua i Stíl Chicago (17ú heag.)Velasco, Kristine Ann M. "Presidential Decree 851: Ang 13th Month Pay." Kabayan 2001.
Lua MLA (9ú heag.)Velasco, Kristine Ann M. "Presidential Decree 851: Ang 13th Month Pay." Kabayan, 2001.
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