Ferreria, A. (2002). This business of entrepreneurship. IN Entrepreneurs' help-line [column]. Philippine Star.
Chicago-referens (17:e uppl.)Ferreria, Alejandrino. "This Business of Entrepreneurship. IN Entrepreneurs' Help-line [column]." Philippine Star 2002.
MLA-referens (9:e uppl.)Ferreria, Alejandrino. "This Business of Entrepreneurship. IN Entrepreneurs' Help-line [column]." Philippine Star, 2002.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.