APA

Hesse H., .The significance of the pure theory of international trade for explaining foreign trade in the post war period. : .

Chicago

Hesse Helmut, .The significance of the pure theory of international trade for explaining foreign trade in the post war period. : .

Harvard

Hesse H., .The significance of the pure theory of international trade for explaining foreign trade in the post war period. : .

MLA

Hesse Helmut, .: . .