Παραπομπή σε μορφή APA (7η εκδ.)

Gray, A. (1914). Principles and practice of electrical engineering. McGraw-Hill Book Company, inc..

Παραπομπή σε μορφή Chicago (17η εκδ.)

Gray, Alexander. Principles and Practice of Electrical Engineering. New York [etc.]: McGraw-Hill Book Company, inc., 1914.

Παραπομπή σε μορφή MLA (8th εκδ.)

Gray, Alexander. Principles and Practice of Electrical Engineering. McGraw-Hill Book Company, inc., 1914.