Cita APA (7a ed.)

Romig, H. G. (1939). Allowable average in sampling inspection.

Cita Chicago Style (17a ed.)

Romig, Harry Gutelius. Allowable Average in Sampling Inspection. Washington, 1939.

Cita MLA (9a ed.)

Romig, Harry Gutelius. Allowable Average in Sampling Inspection. 1939.