APA aipamena

Payne, R. J. Global Issues: Pearson New International Edition (4.). Pearson Education UK.

Chicago Style aipamena

Payne, Richard J. Global Issues: Pearson New International Edition. 4. Pearson Education UK.

MLA aipamena

Payne, Richard J. Global Issues: Pearson New International Edition. 4. Pearson Education UK.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.