Dyfyniad APA

ed by Rudiger Wolfrum & ed by Peter-Tobias Stoll and Clemens Feinaugle. (2008). WTO - Trade in Services. Martinus Nijhoff Publishers.

Dyfyniad Arddull Chicago

ed by Rudiger Wolfrum and ed by Peter-Tobias Stoll and Clemens Feinaugle. WTO - Trade in Services. Boston: Martinus Nijhoff Publishers, 2008.

Dyfyniad MLA

ed by Rudiger Wolfrum and ed by Peter-Tobias Stoll and Clemens Feinaugle. WTO - Trade in Services. Martinus Nijhoff Publishers, 2008.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.