Keeton, W. T. (1980). Biological Science. Norton & Company.
Chicagoスタイル(17版)引用形式Keeton, Willian T. Biological Science. New York: Norton & Company, 1980.
MLA(9版)引用形式Keeton, Willian T. Biological Science. Norton & Company, 1980.
警告: この引用は必ずしも正確ではありません.