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.
Citazione stile Chigago Style (17a edizione)MSA Academic Advancement Institute e 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.
Citatione MLA (9a ed.)MSA Academic Advancement Institute e Merle S. Alferez. MSA Practice Test for Civil Service Exam: Professional and Sub-professional Levels. Year 2005 ed. MSA Academic Advancement Institute, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.