APA (7th ed.) Citation

Dennis , N. T. M., & By , H. .. (1968). Vacuum systems design. Chapman & Hall.

Chicago Style (17th ed.) Citation

Dennis , N. T. M., and Heppel By. Vacuum Systems Design. London: Chapman & Hall, 1968.

MLA (9th ed.) Citation

Dennis , N. T. M., and Heppel By. Vacuum Systems Design. Chapman & Hall, 1968.