APA

Gies F. G. J. [., .Marriage and the family in the middle ages. New York: Harper Row.

Chicago

Gies Francis Gies Joseph [F], .Marriage and the family in the middle ages. New York: Harper Row.

Harvard

Gies F. G. J. [., .Marriage and the family in the middle ages. New York: Harper Row.

MLA

Gies Francis Gies Joseph [F], .New York: Harper Row. .