Friis, R. H. (2012). Essentials of environmental health (2nd ed.). Jones & Bartlett learning.
Chicagoスタイル(17版)引用形式Friis, Robert H. Essentials of Environmental Health. 2nd ed. Burlington: Jones & Bartlett learning, 2012.
MLA(9版)引用形式Friis, Robert H. Essentials of Environmental Health. 2nd ed. Jones & Bartlett learning, 2012.
警告: この引用は必ずしも正確ではありません.