APA stil citiranja

Valley, G. E., & Wallman, H. (1948). Vacuum tube amplifiers: Vacuum tube amplifiers. New York ; Toronto ; London: McGraw-Hill.

Chicago stil citiranja

Valley, George E., and Henry Wallman. Vacuum tube amplifiers: Vacuum tube amplifiers. New York ; Toronto ; London: McGraw-Hill, 1948.

MLA stil citiranja

Valley, George E., and Henry Wallman. Vacuum tube amplifiers: Vacuum tube amplifiers. New York ; Toronto ; London: McGraw-Hill, 1948.