APA

Hartmann F. H., . (1951). Basic documents of international relations. New York: McGraw Hill.

Chicago

Hartmann Frederick H, . 1951. Basic documents of international relations. New York: McGraw Hill.

Harvard

Hartmann F. H., . (1951). Basic documents of international relations. New York: McGraw Hill.

MLA

Hartmann Frederick H, . Basic documents of international relations. New York: McGraw Hill. 1951.