APA (7th ed.) Citation

Knoche, G. (2009). An, Aus: Die Geschichte des Schalters = On, off : the history of switches. Pflitsch.

Chicago Style (17th ed.) Citation

Knoche, Gerhard. An, Aus: Die Geschichte Des Schalters = On, off : The History of Switches. [s.l.]: Pflitsch, 2009.

MLA (9th ed.) Citation

Knoche, Gerhard. An, Aus: Die Geschichte Des Schalters = On, off : The History of Switches. Pflitsch, 2009.

Warning: These citations may not always be 100% accurate.