Cita APA (7a ed.)

UNCTAD. (1992). Review of maritime transport 1991. UNCTAD.

Cita Chicago Style (17a ed.)

UNCTAD. Review of Maritime Transport 1991. Nueva York: UNCTAD, 1992.

Cita MLA (9a ed.)

UNCTAD. Review of Maritime Transport 1991. UNCTAD, 1992.