Measuring the correlates of war
MLA
Singer, J. David, and Paul F Diehl. Measuring the Correlates of War. Ann Arbor: University of Michigan Press, 1990
APA, 7th edition
Singer, J. David, & Diehl, P. F. (1990). Measuring the correlates of war. Ann Arbor: University of Michigan Press
Chicago, 17th edition
Singer, J. David, and Paul F Diehl. Measuring the correlates of war. Ann Arbor: University of Michigan Press, 1990