APA-Zitierstil (7. Ausg.)

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

Chicago-Zitierstil (17. Ausg.)

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

MLA-Zitierstil (9. Ausg.)

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