Cita APA (7a ed.)

Couper, A. D. (1972). The geography of sea transport (1st published.). Hutchinson.

Cita Chicago Style (17a ed.)

Couper, Alastair Dougal. The Geography of Sea Transport. 1st published. London: Hutchinson, 1972.

Cita MLA (9a ed.)

Couper, Alastair Dougal. The Geography of Sea Transport. 1st published. Hutchinson, 1972.