Cita APA (7th ed.)

Colayco, F. J., & Valderrama, H. S. (2005). Pera palaguin workbook: Practicing what you learned. Colayco Foundation For Education.

Cita Chicago (17th ed.)

Colayco, Francisco J., i Helen S. Valderrama. Pera Palaguin Workbook: Practicing What You Learned. [Manila]: Colayco Foundation For Education, 2005.

Cita MLA (9th ed.)

Colayco, Francisco J., i Helen S. Valderrama. Pera Palaguin Workbook: Practicing What You Learned. Colayco Foundation For Education, 2005.