Styl cytowania APA

Wolfrum, R., Stoll, P., & Feinäugle, C. A. H. (2008). WTO - trade in services. Martinus Nijhoff Publishers.

Styl cytowania Chicago

Wolfrum, Rüdiger, Peter-Tobias Stoll, i Clemens A. Herausgeber Feinäugle. WTO - Trade in Services. Leiden ; Boston: Martinus Nijhoff Publishers, 2008.

Styl cytowania MLA

Wolfrum, Rüdiger, et al. WTO - Trade in Services. Martinus Nijhoff Publishers, 2008.