MSA Academic Advancement Institute & Alferez, M. S. (2005). MSA practice test for civil service exam: Professional and sub-professional levels (Year 2005 ed.). MSA Academic Advancement Institute.
芝加哥风格引文MSA Academic Advancement Institute 与 Merle S. Alferez. MSA Practice Test for Civil Service Exam: Professional and Sub-professional Levels. Year 2005 ed. Quezon City: MSA Academic Advancement Institute, 2005.
MLA引文MSA Academic Advancement Institute 与 Merle S. Alferez. MSA Practice Test for Civil Service Exam: Professional and Sub-professional Levels. Year 2005 ed. MSA Academic Advancement Institute, 2005.
警告：这些引文格式不一定是100％准确.