Hay, J. (1981). The undiscovered country. W.W. Norton.
Chicagoスタイル(17版)引用形式Hay, John. The Undiscovered Country. New York: W.W. Norton, 1981.
MLA(9版)引用形式Hay, John. The Undiscovered Country. W.W. Norton, 1981.
警告: この引用は必ずしも正確ではありません.
APA(7版)引用形式