United Nations Industrial Development Organization. (1972). The manufacture and utilizatin of portland cement. New York: United Nations.
Chicago-стиль цитированияUnited Nations Industrial Development Organization. The Manufacture and Utilizatin of Portland Cement. New York: United Nations, 1972.
MLA-цитированиеUnited Nations Industrial Development Organization. The Manufacture and Utilizatin of Portland Cement. New York: United Nations, 1972.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.