Philippines. Congress. House of Representatives. Congressional Planning and Budget Office. (1998). Regional profile, 1998-. Congressional Planning and Budget Office, House of Representatives.
Chicago-viite (17. p.)Philippines. Congress. House of Representatives. Congressional Planning and Budget Office. Regional Profile, 1998-. Quezon City: Congressional Planning and Budget Office, House of Representatives, 1998.
MLA-viite (9. p.)Philippines. Congress. House of Representatives. Congressional Planning and Budget Office. Regional Profile, 1998-. Congressional Planning and Budget Office, House of Representatives, 1998.
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