Cita APA (7a ed.)

Volk, B. (1982). Seaborne trade forecasts 1981: A synoptical review. Institute of Shipping Economics = Institut für Seeverkehrswirtschaft.

Cita Chicago Style (17a ed.)

Volk, B. Seaborne Trade Forecasts 1981: A Synoptical Review. Bremen: Institute of Shipping Economics = Institut für Seeverkehrswirtschaft, 1982.

Cita MLA (9a ed.)

Volk, B. Seaborne Trade Forecasts 1981: A Synoptical Review. Institute of Shipping Economics = Institut für Seeverkehrswirtschaft, 1982.