APA (7th ed.) Citation

ELVOX COSTRUZIONI ELETTRONICHE S.P.A. (Padova) & Grandtech s.r.o. (Košice). (2009). Video door entry systems with sound system call ([1st ed.].). [s.n.].

Chicago Style (17th ed.) Citation

ELVOX COSTRUZIONI ELETTRONICHE S.P.A. (Padova) and Grandtech s.r.o. (Košice). Video Door Entry Systems with Sound System Call. [1st ed.]. [S.l.]: [s.n.], 2009.

MLA (9th ed.) Citation

ELVOX COSTRUZIONI ELETTRONICHE S.P.A. (Padova) and Grandtech s.r.o. (Košice). Video Door Entry Systems with Sound System Call. [1st ed.]. [s.n.], 2009.