APA引文

Spangenberg, K. R. (1948). Vacuum tubes. McGraw-Hill Book Co..

Chicago Edition Citation

Spangenberg, Karl R. Vacuum Tubes. New York: McGraw-Hill Book Co., 1948.

MLA引文

Spangenberg, Karl R. Vacuum Tubes. McGraw-Hill Book Co., 1948.

警告：這些引文格式不一定是100％准確.