Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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