Philippines. Congress. Senate & Villar, M. B. (2007). The Philippine Senate. The Senate of the Philippines.
Chicago-viite (17. p.)Philippines. Congress. Senate ja Manuel B.,Jr Villar. The Philippine Senate. Pasay City: The Senate of the Philippines, 2007.
MLA-viite (9. p.)Philippines. Congress. Senate ja Manuel B.,Jr Villar. The Philippine Senate. The Senate of the Philippines, 2007.
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