Boyce, W. D. (1977). The Philippine Islands [microform]. Photoduplication Service, University of the Philippines Library.
Lua i Stíl Chicago (17ú heag.)Boyce, William Dickson. The Philippine Islands [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
Lua MLA (9ú heag.)Boyce, William Dickson. The Philippine Islands [microform]. Photoduplication Service, University of the Philippines Library, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.