Sakr, S. A. (1971). Development Alternatives in Egypt in 1974/75. The Institute of National Planning.
芝加哥风格引文Sakr, Sakr Ahmed. Development Alternatives in Egypt in 1974/75. Cairo: The Institute of National Planning, 1971.
MLA引文Sakr, Sakr Ahmed. Development Alternatives in Egypt in 1974/75. The Institute of National Planning, 1971.
警告：这些引文格式不一定是100％准确.