APA aipamena

Pastrana Buelvas, E. (2016). Colombia’s Foreign Policy on integration.

Chicago Style aipamena

Pastrana Buelvas, Eduardo. Colombia’s Foreign Policy on Integration. 2016.

MLA aipamena

Pastrana Buelvas, Eduardo. Colombia’s Foreign Policy on Integration. 2016.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.