APA-ийн эшлэл(7 дахь хэвлэлт)

Ellsworth, J. W. (1976). Politics and political systems: An introduction to political science. McGraw-Hill.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Ellsworth, John W. Politics and Political Systems: An Introduction to Political Science. New York: McGraw-Hill, 1976.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ellsworth, John W. Politics and Political Systems: An Introduction to Political Science. McGraw-Hill, 1976.