Cita APA (7th ed.)

Barcebal, S., & Ortega, B. (2000). Chronology of events. UP Forum.

Cita Chicago (17th ed.)

Barcebal, Sol, i Bart Ortega. "Chronology of Events." UP Forum 2000.

Cita MLA (9th ed.)

Barcebal, Sol, i Bart Ortega. "Chronology of Events." UP Forum, 2000.