Cita APA (7a ed.)

SIEMENS. (1987). DIGITAL telecommunication: Parte 1 Basic information. Siemens Aktiengesellschaft.

Cita Chicago Style (17a ed.)

SIEMENS. DIGITAL Telecommunication: Parte 1 Basic Information. Berlin: Siemens Aktiengesellschaft, 1987.

Cita MLA (8a ed.)

SIEMENS. DIGITAL Telecommunication: Parte 1 Basic Information. Siemens Aktiengesellschaft, 1987.