United nations industrial development organization Vienna. (1973). The petrochemical industry. New York: United Nation.
Chicago-стиль цитированияUnited nations industrial development organization Vienna. The Petrochemical Industry. New York: United Nation, 1973.
MLA-цитированиеUnited nations industrial development organization Vienna. The Petrochemical Industry. New York: United Nation, 1973.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.