Alferez, M. S. (2006). Career service examination reviewer for professional and sub-professional levels (2006 ed.). MSA Math Tutoring Center.
Citace podle Chicago (17th ed.)Alferez, Merle S. Career Service Examination Reviewer for Professional and Sub-professional Levels. 2006 ed. Quezon City: MSA Math Tutoring Center, 2006.
Citace podle MLA (9th ed.)Alferez, Merle S. Career Service Examination Reviewer for Professional and Sub-professional Levels. 2006 ed. MSA Math Tutoring Center, 2006.
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