Philippines. Civil Service Commission. (2011). 2011 memorandum circulars. Civil Service Commission.
芝加哥风格引文Philippines. Civil Service Commission. 2011 Memorandum Circulars. Metro Manila: Civil Service Commission, 2011.
MLA引文Philippines. Civil Service Commission. 2011 Memorandum Circulars. Civil Service Commission, 2011.
警告：这些引文格式不一定是100％准确.