APA (7th ed.) Citation

Christophory, J., Thoma, E., & Hury, C. (1997). Luxembourg (Rev. ed.). Clio Press.

Chicago Style (17th ed.) Citation

Christophory, Jul, Emile Thoma, and Carlo Hury. Luxembourg. Rev. ed. Santa Barbara, Calif.: Clio Press, 1997.

MLA (9th ed.) Citation

Christophory, Jul, et al. Luxembourg. Rev. ed. Clio Press, 1997.