Cita APA (7a ed.)

Lawson & Uhlenbeck, G. E. (1950). Threshold signals. McGraw-Hill.

Cita Chicago Style (17a ed.)

Lawson y George Eugene Uhlenbeck. Threshold Signals. N.Y: McGraw-Hill, 1950.

Cita MLA (8a ed.)

Lawson y George Eugene Uhlenbeck. Threshold Signals. McGraw-Hill, 1950.