Cita APA (7a ed.)

Welch, D. (1969). Spectrum analyzer measurements. Tektronix.

Cita Chicago Style (17a ed.)

Welch, Dan. Spectrum Analyzer Measurements. Oregon: Tektronix, 1969.

Cita MLA (8a ed.)

Welch, Dan. Spectrum Analyzer Measurements. Tektronix, 1969.