Tolong jelaskan mengenai Uskup Agung dari Keuskupan Agung Manila

Gregory XIII, Pope, 1502–1585. "Bull for erection of the Diocese and Cathedral Church of Manila." In The Philippine Islands, 1493–1898. Cleveland, Ohio: A.H. Clark Company, 1903-9. Vol. 4, 1576–82. Pp. 119–124.