Philippines. Congress. Senate. (2012). Performance of the Senate: Fifteenth Congress, Second Regular Session (July 25, 2011-June 8, 2012). Senate of the Philippines.
Chicago-viite (17. p.)Philippines. Congress. Senate. Performance of the Senate: Fifteenth Congress, Second Regular Session (July 25, 2011-June 8, 2012). Manila: Senate of the Philippines, 2012.
MLA-viite (9. p.)Philippines. Congress. Senate. Performance of the Senate: Fifteenth Congress, Second Regular Session (July 25, 2011-June 8, 2012). Senate of the Philippines, 2012.
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