Villegas, E. D. (1988). Values of school administrators as perceived by teachers in Bangar & Sudipen Districts School year 1987-1988.
Lua i Stíl Chicago (17ú heag.)Villegas, Efigenia D. Values of School Administrators as Perceived by Teachers in Bangar & Sudipen Districts School Year 1987-1988. 1988.
Lua MLA (9ú heag.)Villegas, Efigenia D. Values of School Administrators as Perceived by Teachers in Bangar & Sudipen Districts School Year 1987-1988. 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.