Cita APA (7a ed.)

United Nations. Technical Assistance Administration & Ortiz, R. M. (1954). The harbor system of El Salvador: Prepared for the Government of El Salvador by Ricardo M. Ortiz.

Cita Chicago Style (17a ed.)

United Nations. Technical Assistance Administration y Ricardo M. Ortiz. The Harbor System of El Salvador: Prepared for the Government of El Salvador by Ricardo M. Ortiz. New York, 1954.

Cita MLA (9a ed.)

United Nations. Technical Assistance Administration y Ricardo M. Ortiz. The Harbor System of El Salvador: Prepared for the Government of El Salvador by Ricardo M. Ortiz. 1954.