APA-referens (7:e uppl.)

Gray, A. (1917). Principles and practice of electrical engineering (2d ed., rev. and enl.). McGraw-Hill.

Chicago-referens (17:e uppl.)

Gray, Alexander. Principles and Practice of Electrical Engineering. 2d ed., rev. and enl. New York: McGraw-Hill, 1917.

MLA-referens (8:e uppl.)

Gray, Alexander. Principles and Practice of Electrical Engineering. 2d ed., rev. and enl. McGraw-Hill, 1917.