Santos, M. Q. (1968). College freshman English workbook. University of the Philippines Press.
Čikaški stil citiranja (17. izdanje)Santos, Maria Q. College Freshman English Workbook. Quezon City: University of the Philippines Press, 1968.
MLA način citiranja (9. izdanje)Santos, Maria Q. College Freshman English Workbook. University of the Philippines Press, 1968.
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