Philippines. DENR. Protected Areas and Wildlife Bureau. (1980). May pag-asa pa. [s. n.].
Chicago Style (17th ed.) CitationPhilippines. DENR. Protected Areas and Wildlife Bureau. May Pag-asa Pa. [s. l.]: [s. n.], 1980.
ציטוט MLAPhilippines. DENR. Protected Areas and Wildlife Bureau. May Pag-asa Pa. [s. n.], 1980.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.