Del Callar, M. A. (1975). A correlation study between listening and language achievement among freshmen nursing students [microform]. Photoduplication Service. University of the Philippines Library.
Čikaški stil citiranja (17. izdanje)Del Callar, Mary Aloysius. A Correlation Study Between Listening and Language Achievement Among Freshmen Nursing Students [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1975.
MLA način citiranja (9. izdanje)Del Callar, Mary Aloysius. A Correlation Study Between Listening and Language Achievement Among Freshmen Nursing Students [microform]. Photoduplication Service. University of the Philippines Library, 1975.
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