Cita APA (7th ed.)

Guillermo, A. G. (2005). Brushstrokes from the heart: The first five years. Petron Corporation.

Cita Chicago (17th ed.)

Guillermo, Alice G. Brushstrokes from the Heart: The First Five Years. Makati City: Petron Corporation, 2005.

Cita MLA (9th ed.)

Guillermo, Alice G. Brushstrokes from the Heart: The First Five Years. Petron Corporation, 2005.