Lopez, R. H. (1970). The ethylene-producing industry: Its growth and regional distribution in the United States. New York: Praeger Publishers.
শিকাগো স্টাইলে সাইটেশনLopez, Raymond Henry. The Ethylene-producing Industry: Its Growth and Regional Distribution in the United States. New York: Praeger Publishers, 1970.
এমএলএ সাইটেশনLopez, Raymond Henry. The Ethylene-producing Industry: Its Growth and Regional Distribution in the United States. New York: Praeger Publishers, 1970.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.