APA (7th ed.) Citation

Delta Energy Systems AG (Bern-Bümpliz) & Delta Energy Systems Slovakia (Bratislava, Slovensko). (2007). DC power systems. Power systems for telecom applications ([1st ed.].). [s.n.].

Chicago Style (17th ed.) Citation

Delta Energy Systems AG (Bern-Bümpliz) and Slovensko) Delta Energy Systems Slovakia (Bratislava. DC Power Systems. Power Systems for Telecom Applications. [1st ed.]. [S.l.]: [s.n.], 2007.

MLA (9th ed.) Citation

Delta Energy Systems AG (Bern-Bümpliz) and Slovensko) Delta Energy Systems Slovakia (Bratislava. DC Power Systems. Power Systems for Telecom Applications. [1st ed.]. [s.n.], 2007.