APA (7th ed.) Citation

Salkowski, C. L. (1988). Ultrasonic Rayleigh wave inspection of unit train rotary couplers. [publisher not identified].

Chicago Style (17th ed.) Citation

Salkowski, Charles Leo. Ultrasonic Rayleigh Wave Inspection of Unit Train Rotary Couplers. [Place of publication not identified]: [publisher not identified], 1988.

MLA (9th ed.) Citation

Salkowski, Charles Leo. Ultrasonic Rayleigh Wave Inspection of Unit Train Rotary Couplers. [publisher not identified], 1988.