Calder, N. (1973). Nature in the round: A guide to environmental science. Viking Press.
芝加哥风格引文Calder, Nigel. Nature in the Round: A Guide to Environmental Science. New York: Viking Press, 1973.
MLA引文Calder, Nigel. Nature in the Round: A Guide to Environmental Science. Viking Press, 1973.
警告：这些引文格式不一定是100％准确.