APA (7th ed.) Citation

Eisenstadt, S. N. (1969). The political systems of empires. Free Press.

Chicago Style (17th ed.) Citation

Eisenstadt, S. N. The Political Systems of Empires. New York: Free Press, 1969.

MLA (9th ed.) Citation

Eisenstadt, S. N. The Political Systems of Empires. Free Press, 1969.

Warning: These citations may not always be 100% accurate.