APA

(1972). The Thirty Years' War. Lexington/Mass. [u.a.]: Heath.

Chicago

1972. The Thirty Years' War. Lexington/Mass. [u.a.]: Heath.

Harvard

(1972). The Thirty Years' War. Lexington/Mass. [u.a.]: Heath.

MLA

The Thirty Years' War. Lexington/Mass. [u.a.]: Heath. 1972.