APA (7th ed.) Citation

U.S. Military Academy, West Point. Dept. of Social Science, U.S. Military Academy, West Point. Dept. of Economics, Government, and History. The governments of the major foreign powers, & Beukema, H. (1949). Contemporary foreign governments (Rev. ed.). Rinehart.

Chicago Style (17th ed.) Citation

U.S. Military Academy, West Point. Dept. of Social Science, West Point. Dept. of Economics U.S. Military Academy, and Herman Beukema. Contemporary Foreign Governments. Rev. ed. New York: Rinehart, 1949.

MLA (9th ed.) Citation

U.S. Military Academy, West Point. Dept. of Social Science, et al. Contemporary Foreign Governments. Rev. ed. Rinehart, 1949.