Olivera, B. T. (1981). Jose Yulo: The selfless statesman. U.P. Jorge B. Vargas Filipiniana Research Center.
Lua i Stíl Chicago (17ú heag.)Olivera, Baldomero T. Jose Yulo: The Selfless Statesman. Mandaluyong, Metro Manila: U.P. Jorge B. Vargas Filipiniana Research Center, 1981.
Lua MLA (9ú heag.)Olivera, Baldomero T. Jose Yulo: The Selfless Statesman. U.P. Jorge B. Vargas Filipiniana Research Center, 1981.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.