Warren, K. (1975). World steel: An economic geography. New York: Crane, Russak.
Trích dẫn kiểu ChicagoWarren, Kenneth. World Steel: An Economic Geography. New York: Crane, Russak, 1975.
MLA引文Warren, Kenneth. World Steel: An Economic Geography. New York: Crane, Russak, 1975.
警告：這些引文格式不一定是100％准確.