Cita APA (7th ed.)

ebrary, Inc, & Unger, R. W. (2011). Shipping and economic growth 1350-1850. Brill.

Cita Chicago (17th ed.)

ebrary, Inc, i Richard W. Unger. Shipping and Economic Growth 1350-1850. Leiden ; Boston: Brill, 2011.

Cita MLA (9th ed.)

ebrary, Inc, i Richard W. Unger. Shipping and Economic Growth 1350-1850. Brill, 2011.