EVERSON, D. H., & PAINE, J. P. (1973). An introduction to systematic political science. The Dorsey Press.

EVERSON, David H., and Joann Poparad PAINE. An Introduction to Systematic Political Science. America: The Dorsey Press, 1973.

EVERSON, David H., and Joann Poparad PAINE. An Introduction to Systematic Political Science. The Dorsey Press, 1973.