Mañalac, S. (2014). Ricardo Penson and his fight for the great Filipino dream. Sunday Times Magazine.
Chicago-referens (17:e uppl.)Mañalac, Shiela. "Ricardo Penson and His Fight for the Great Filipino Dream." Sunday Times Magazine 2014.
MLA-referens (9:e uppl.)Mañalac, Shiela. "Ricardo Penson and His Fight for the Great Filipino Dream." Sunday Times Magazine, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.