Potter, Robert D. (February 12, 1938). "Building blocks of life ruled by the number 288: This number and its multiples found everywhere in groupings of amino acids to form proteins". The Science News-Letter. 33 (7): 99–100. doi:10.2307/3914385. JSTOR3914385.
Nowlan, Robert A. (2017). "Logical Nonsense". Masters of Mathematics: The Problems They Solved, Why These Are Important, and What You Should Know about Them. Sense Publishers. pp. 263–268. doi:10.1007/978-94-6300-893-8_17. ISBN978-94-6300-893-8. See p. 284.
Potter, Robert D. (February 12, 1938). "Building blocks of life ruled by the number 288: This number and its multiples found everywhere in groupings of amino acids to form proteins". The Science News-Letter. 33 (7): 99–100. doi:10.2307/3914385. JSTOR3914385.