Bituin, R. (1977). Role perception and role performance of elementary schoool principals in school health programs [microform]. Photoduplication Service. University of the Philippines Library.
Citazione stile Chigago Style (17a edizione)Bituin, Remedios. Role Perception and Role Performance of Elementary Schoool Principals in School Health Programs [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Citatione MLA (9a ed.)Bituin, Remedios. Role Perception and Role Performance of Elementary Schoool Principals in School Health Programs [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.