Heel, A. C. S. 1., Velzel, C. H. F., & Rosenfeld, J. (1968). What is light? New York: McGraw-Hill Book Company.
Chicago Style CitationHeel, Abraham Cornelis Sebastiën 1899-1966, Christiaan H. F. Velzel, and J.L.J Rosenfeld. What Is Light? New York: McGraw-Hill Book Company, 1968.
MLA CitationHeel, Abraham Cornelis Sebastiën 1899-1966, Christiaan H. F. Velzel, and J.L.J Rosenfeld. What Is Light? New York: McGraw-Hill Book Company, 1968.
Warning: These citations may not always be 100% accurate.