APA (7th ed.) Citation

Walker, G., & Senft, J. R. (1985). Free piston Stirling engines. Springer-Verlag.

Chicago Style (17th ed.) Citation

Walker, G., and J. R. Senft. Free Piston Stirling Engines. Berlin ; New York: Springer-Verlag, 1985.

MLA (8th ed.) Citation

Walker, G., and J. R. Senft. Free Piston Stirling Engines. Springer-Verlag, 1985.