Underwood, E. J. (1956). Trace elements in human and animal nutrition. Academic Press Inc.
芝加哥风格引文Underwood, Eric J. Trace Elements in Human and Animal Nutrition. New York: Academic Press Inc, 1956.
MLA引文Underwood, Eric J. Trace Elements in Human and Animal Nutrition. Academic Press Inc, 1956.
警告：这些引文格式不一定是100％准确.