APA-referens (7:e uppl.)

Carpio, A. A. (2015). Business at the speed of light. Philippine Graphic.

Chicago-referens (17:e uppl.)

Carpio, Alma Anonas. "Business at the Speed of Light." Philippine Graphic 2015.

MLA-referens (9:e uppl.)

Carpio, Alma Anonas. "Business at the Speed of Light." Philippine Graphic, 2015.