Tan, J. M. L. (2000). The last great forest: Luzon's Northern Sierra Madre Natural Park. Bookmark.
Lua i Stíl Chicago (17ú heag.)Tan, Jose Ma. Lorenzo. The Last Great Forest: Luzon's Northern Sierra Madre Natural Park. Makati City: Bookmark, 2000.
Lua MLA (9ú heag.)Tan, Jose Ma. Lorenzo. The Last Great Forest: Luzon's Northern Sierra Madre Natural Park. Bookmark, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.