Cita APA (7th ed.)

Boesch, H. H. (1964). A geography of world economy. N. J.Van Nostrand.

Cita Chicago (17th ed.)

Boesch, Hans Heinrich. A Geography of World Economy. Princeton: N. J.Van Nostrand, 1964.

Cita MLA (9th ed.)

Boesch, Hans Heinrich. A Geography of World Economy. N. J.Van Nostrand, 1964.