Ewing, J. H., & Gehring, F. (1991). Paul Halmos: Celebrating 50 years of mathematics. springer.
Chicago Edition CitationEwing, John H., and FW Gehring. Paul Halmos: Celebrating 50 Years of Mathematics. springer, 1991.
MLA Edition CitationEwing, John H., and FW Gehring. Paul Halmos: Celebrating 50 Years of Mathematics. springer, 1991.
Warning: These citations may not always be 100% accurate.