Gowing, P. G. America's proconsuls in Mindanao, 1899-1913. Mindanao journal..
Lua i Stíl Chicago (17ú heag.)Gowing, Peter G. "America's Proconsuls in Mindanao, 1899-1913." Mindanao Journal. .
Lua MLA (9ú heag.)Gowing, Peter G. "America's Proconsuls in Mindanao, 1899-1913." Mindanao Journal., .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.