Packer, Herbert L. (May 1958). "A Tale of Two Typewriters". Stanford Law Review. 10 (3): 409–440, 431-2 (formation), 432 (Pressman, Weyl), 433 (Fifth), 433 fn 37 (Hiss). doi:10.2307/1226822. JSTOR1226822.
Packer, Herbert L. (May 1958). "A Tale of Two Typewriters". Stanford Law Review. 10 (3): 409–440, 431-2 (formation), 432 (Pressman, Weyl), 433 (Fifth), 433 fn 37 (Hiss). doi:10.2307/1226822. JSTOR1226822.