National Library of the Philippines. Impact stories: A publication for library and information services month (Librarian edition.).
Cita Chicago (17th ed.)National Library of the Philippines. Impact Stories: A Publication for Library and Information Services Month. Librarian edition.
Cita MLA (9th ed.)National Library of the Philippines. Impact Stories: A Publication for Library and Information Services Month. Librarian edition.
Atenció: Aquestes cites poden no estar 100% correctes.