Burritt, C. M. (1976). Complete list of Spanish mining claims recorded in the Mining Bureau [microform]. Photoduplication Service. University of the Philippines Library.
Chicago-Zitierstil (17. Ausg.)Burritt, Charles M. Complete List of Spanish Mining Claims Recorded in the Mining Bureau [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1976.
MLA-Zitierstil (9. Ausg.)Burritt, Charles M. Complete List of Spanish Mining Claims Recorded in the Mining Bureau [microform]. Photoduplication Service. University of the Philippines Library, 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.