Alferez, M. S. (1998). Proficiency test I for incoming college students. MSA Math Tutoring Center.
Cita Chicago (17th ed.)Alferez, Merle S. Proficiency Test I for Incoming College Students. [Quezon City]: MSA Math Tutoring Center, 1998.
Cita MLA (9th ed.)Alferez, Merle S. Proficiency Test I for Incoming College Students. MSA Math Tutoring Center, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.