APA aipamena

(2008). WTO--trade in services. Martinus Nijhoff Publishers.

Chicago Style aipamena

WTO--trade in Services. Leiden: Martinus Nijhoff Publishers, 2008.

MLA aipamena

WTO--trade in Services. Martinus Nijhoff Publishers, 2008.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.