Booulding, K. E. (1964). The meaning of the Twentieth Century. Higginbothams.
シカゴスタイル引用形Booulding, Kenneth E. The Meaning of the Twentieth Century. Madras: Higginbothams, 1964.
MLA引用形式Booulding, Kenneth E. The Meaning of the Twentieth Century. Higginbothams, 1964.
警告: この引用は必ずしも正確ではありません.