APA

Kirchner W., . (1991). Western Civilization To 1500 2nd Edition. New York: Harper Collins Publishers.

Chicago

Kirchner Walther, . 1991. Western Civilization To 1500 2nd Edition. New York: Harper Collins Publishers.

Harvard

Kirchner W., . (1991). Western Civilization To 1500 2nd Edition. New York: Harper Collins Publishers.

MLA

Kirchner Walther, . Western Civilization To 1500 2nd Edition. New York: Harper Collins Publishers. 1991.