Παραπομπή APA

Knight, S. A. (1978). Electrical principles for technicians. Butterworths.

Παραπομπή Chicago Style

Knight, S A. Electrical Principles for Technicians. London: Butterworths, 1978.

Παραπομπή MLA

Knight, S A. Electrical Principles for Technicians. Butterworths, 1978.