Bolado, R. G. (1976). Trends in the performance ratings of public elementary classroom teachers of Umingan Pangasinan in relation to some personal and professional factors [microform]. Photoduplication Service University of the Philippines Library.
Cita Chicago (17th ed.)Bolado, Rufino G. Trends in the Performance Ratings of Public Elementary Classroom Teachers of Umingan Pangasinan in Relation to Some Personal and Professional Factors [microform]. Quezon City: Photoduplication Service University of the Philippines Library, 1976.
Cita MLA (9th ed.)Bolado, Rufino G. Trends in the Performance Ratings of Public Elementary Classroom Teachers of Umingan Pangasinan in Relation to Some Personal and Professional Factors [microform]. Photoduplication Service University of the Philippines Library, 1976.