Purdom, P. W., & Gabriel, K. L. (1971). Environmental health. Academic Press.
Chicagoスタイル(17版)引用形式Purdom, P. Walton, , Karl L. Gabriel. Environmental Health. New York: Academic Press, 1971.
MLA(8版)引用形式Purdom, P. Walton, , Karl L. Gabriel. Environmental Health. Academic Press, 1971.
警告: この引用は必ずしも正確ではありません.