National Library of the Philippines. Impact stories: A publication for library and information services month (Librarian edition.).
Chicago-Zitierstil (17. Ausg.)National Library of the Philippines. Impact Stories: A Publication for Library and Information Services Month. Librarian edition.
MLA-Zitierstil (9. Ausg.)National Library of the Philippines. Impact Stories: A Publication for Library and Information Services Month. Librarian edition.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.