APA (7th ed.) Citation

Kitchen, G., & Azzam, H. T. (1967). Realistic friction testing. Machine Design, 39, 195.

Chicago Style (17th ed.) Citation

Kitchen, G., and H. T. Azzam. "Realistic Friction Testing." Machine Design 39 (1967): 195.

MLA (9th ed.) Citation

Kitchen, G., and H. T. Azzam. "Realistic Friction Testing." Machine Design, vol. 39, 1967, p. 195.