APA (7th ed.) Citation

Heel, A. C. S. v., Velzel, C. H. F., & Rosenfeld, J. L. J. (1968). What is light? McGraw-Hill.

Chicago Style (17th ed.) Citation

Heel, A. C. S. van, C. H. F. Velzel, and J. L. J. Rosenfeld. What Is Light? New York: McGraw-Hill, 1968.

MLA (9th ed.) Citation

Heel, A. C. S. van, et al. What Is Light? McGraw-Hill, 1968.