Johnson, P. H. (1968). The survival of the fittest. Macmillan.
Chicagoスタイル(17版)引用形式Johnson, Pamela Hansford. The Survival of the Fittest. London, Melbourne [etc.]: Macmillan, 1968.
MLA(8版)引用形式Johnson, Pamela Hansford. The Survival of the Fittest. Macmillan, 1968.
警告: この引用は必ずしも正確ではありません.