His On certain classes of function spaces and on interpolation of sublinear operators, 1956.

Harmonic analysis, 1982 (a.e.) CIP t.p. (G. Weiss) CIP data sheet (Guido Leopold Weiss, b. 11/29/28) book t.p. (Guido Weiss)

OCLC, Nov. 18, 2016: (access points: Weiss, Guido L., 1928- ; Weiss, Guido L.; Weiss, Guido, 1928- ; Weiss, Guido; Weiss, G.; Weiss, G. L.; usage: Guido L. Weiss; Guido Weiss; G. Weiss; G.L. Weiss)

The fundamentals of analysis for talented freshmen, 2016, via WWW, Nov. 18, 2016: PDF title page (Guido L. Weiss; Washington University in St. Louis) p. 81 (all his university degrees are from the University of Chicago; on the faculty of DePaul University from 1956 to 1960; 1960 to 2015 his positions were all at Washington University in St. Louis)