Celis, L. R. (1977). A survey of academic chief librarians in the Philippines. University of the Philippines Library.
Citazione stile Chigago Style (17a edizione)Celis, Lydia Ramos. A Survey of Academic Chief Librarians in the Philippines. Quezon City: University of the Philippines Library, 1977.
Citatione MLA (9a ed.)Celis, Lydia Ramos. A Survey of Academic Chief Librarians in the Philippines. University of the Philippines Library, 1977.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.