Styl cytowania APA

Heel, A. C. S. v., & Velzel, C. H. F. (1968). What is light? Weidenfeld & Nicolson.

Styl cytowania Chicago

Heel, A. C. S. van, i C. H. F. Velzel. What Is Light? London: Weidenfeld & Nicolson, 1968.

Styl cytowania MLA

Heel, A. C. S. van, i C. H. F. Velzel. What Is Light? Weidenfeld & Nicolson, 1968.