APA-referens (7:e uppl.)

Perpeña, E. C. (2001). Rates: The high (and low) of leading. Manila Times.

Chicago-referens (17:e uppl.)

Perpeña, Ed C. "Rates: The High (and Low) of Leading." Manila Times 2001.

MLA-referens (9:e uppl.)

Perpeña, Ed C. "Rates: The High (and Low) of Leading." Manila Times, 2001.