Clark, R. (1961). The universe: Plan or accident? Muhlenberg Press.
Chicagoスタイル(17版)引用形式Clark, Robert. The Universe: Plan or Accident? Philadelphia: Muhlenberg Press, 1961.
MLA(9版)引用形式Clark, Robert. The Universe: Plan or Accident? Muhlenberg Press, 1961.
警告: この引用は必ずしも正確ではありません.