Underwood, E. J. (1956). Trace elements in human and animal nutrition. Academic Press Inc.
Chicago Style aipamenaUnderwood, Eric J. Trace Elements in Human and Animal Nutrition. New York: Academic Press Inc, 1956.
MLA aipamenaUnderwood, Eric J. Trace Elements in Human and Animal Nutrition. Academic Press Inc, 1956.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.