@book{33610,
	author = {Roskin, Michael, and Berry, Nicholas O.},
	title = {IR :},
	publisher = {Prentice-Hall,},
	year = {c1993.},
	address = {Englewood Cliffs, N.J. :},
	edition = {2nd ed.},
	note = {Rev. ed. of: IR, an introduction to international relations. c1990.}
}