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.
Lua i Stíl Chicago (17ú heag.)MSA Academic Advancement Institute agus 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.
Lua MLA (9ú heag.)MSA Academic Advancement Institute agus Merle S. Alferez. MSA Practice Test for Civil Service Exam: Professional and Sub-professional Levels. Year 2005 ed. MSA Academic Advancement Institute, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.