Einstein, A. (1905). «Über einen die Erzeugung und Verwandlung des Lichtes betreffenden heuristischen Gesichtspunkt» [On a heuristic viewpoint concerning the production and transformation of light]. Annalen der Physik. 322 (6): 132–148. Bibcode:1905AnP...322..132E. doi:10.1002/andp.19053220607.
H. W. Turnbull (1940–1941). «Early Scottish Relations with the Royal Society: I. James Gregory, F.R.S. (1638–1675)». Notes and Records of the Royal Society of London. 3: 22. JSTOR531136. doi:10.1098/rsnr.1940.0003.
Einstein, A. (1905). «Über einen die Erzeugung und Verwandlung des Lichtes betreffenden heuristischen Gesichtspunkt» [On a heuristic viewpoint concerning the production and transformation of light]. Annalen der Physik. 322 (6): 132–148. Bibcode:1905AnP...322..132E. doi:10.1002/andp.19053220607.
Rashed, Roshdi (1990). «A pioneer in anaclastics: Ibn Sahl on burning mirrors and lenses». Isis. 81 (3): 464–491. JSTOR233423. doi:10.1086/355456.
H. W. Turnbull (1940–1941). «Early Scottish Relations with the Royal Society: I. James Gregory, F.R.S. (1638–1675)». Notes and Records of the Royal Society of London. 3: 22. JSTOR531136. doi:10.1098/rsnr.1940.0003.
C. H. Townes. «The first laser». University of Chicago. Besøkt 15. mai 2008.
C. H. Townes (2003). «The first laser». I Laura Garwin and Tim Lincoln. A Century of Nature: Twenty-One Discoveries that Changed Science and the World. University of Chicago Press. s. 107–12. ISBN0-226-28413-1.
Einstein, A. (1967). «On a heuristic viewpoint concerning the production and transformation of light». I Ter Haar, D. The Old Quantum Theory. Pergamon. s. 91–107. Besøkt 18. mars 2010. The chapter is an English translation of Einstein's 1905 paper on the photoelectric effect.