Clauna, J. C. (1979). A study of the efficiency ratings of the intermediate public elementary school teachers in the Division of Laguna during the school year, 1951-52 [microform]. Photoduplication Service. University of the Philippines Library.
Chicago (17e ed.) BronvermeldingClauna, Jose C. A Study of the Efficiency Ratings of the Intermediate Public Elementary School Teachers in the Division of Laguna During the School Year, 1951-52 [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1979.
MLA (9e ed.) BronvermeldingClauna, Jose C. A Study of the Efficiency Ratings of the Intermediate Public Elementary School Teachers in the Division of Laguna During the School Year, 1951-52 [microform]. Photoduplication Service. University of the Philippines Library, 1979.