United States. Operations Mission to Liberia & United States. International Cooperation Administration. (1961). Third report on forestry progress in Liberia, 1951-1959. International Cooperation Administration.
芝加哥风格引文United States. Operations Mission to Liberia 与 United States. International Cooperation Administration. Third Report on Forestry Progress in Liberia, 1951-1959. Washington, D.C.: International Cooperation Administration, 1961.
MLA引文United States. Operations Mission to Liberia 与 United States. International Cooperation Administration. Third Report on Forestry Progress in Liberia, 1951-1959. International Cooperation Administration, 1961.
警告：这些引文格式不一定是100％准确.