Cita APA (7a ed.)

Schönknecht, R., & Bertholdt, J. (1983). Ships and shipping of tomorrow ([1st publ.].). MacGregor.

Cita Chicago Style (17a ed.)

Schönknecht, Rolf, y Jochen Bertholdt. Ships and Shipping of Tomorrow. [1st publ.]. Hounslow: MacGregor, 1983.

Cita MLA (9a ed.)

Schönknecht, Rolf, y Jochen Bertholdt. Ships and Shipping of Tomorrow. [1st publ.]. MacGregor, 1983.