Beck, H. F. (1970). The age of technology. Concordia Pub. House.
Chicagoスタイル(17版)引用形式Beck, Hubert F. The Age of Technology. St. Louis: Concordia Pub. House, 1970.
MLA(8版)引用形式Beck, Hubert F. The Age of Technology. Concordia Pub. House, 1970.
警告: この引用は必ずしも正確ではありません.