Sewell, J. W. La Metamorfosis del Tercer Mundo. United States Information Agency.
Cita Chicago Style (17a ed.)Sewell, John W. La Metamorfosis Del Tercer Mundo. Washigton D.C: United States Information Agency.
Cita MLA (9a ed.)Sewell, John W. La Metamorfosis Del Tercer Mundo. United States Information Agency.
警告：这些引文格式不一定是100％准确.