APA (7th ed.) Citation

Robertson, J. K. (1924). X-rays and X-ray apparatus: An elementary course. The Macmillan company.

Chicago Style (17th ed.) Citation

Robertson, John Kellock. X-rays and X-ray Apparatus: An Elementary Course. New York: The Macmillan company, 1924.

MLA (8th ed.) Citation

Robertson, John Kellock. X-rays and X-ray Apparatus: An Elementary Course. The Macmillan company, 1924.