Cita APA (7th ed.)
Ungrad, H., Winkler, W., Wiszniewski, A., & Harrison, P. G. (1995). Protection techniques in electrical energy systems. M. Dekker.
Cita Chicago (17th ed.)
Ungrad, Helmut, Willibald Winkler, Andrzej Wiszniewski, i Peter G. Harrison. Protection Techniques in Electrical Energy Systems. New York: M. Dekker, 1995.
Cita MLA (9th ed.)
Ungrad, Helmut, et al. Protection Techniques in Electrical Energy Systems. M. Dekker, 1995.
Atenció: Aquestes cites poden no estar 100% correctes.