For a criticism of a specific book:
Ex.: a criticism of Ernest Hemingway’s The sun also rises written by Michael S. Reynolds (main entry, 100 field).
The first 6xx is 600 10 Hemingway, Ernest, ‡d 1899-1961. ‡t Sun also rises.
813 -Dewey for American fiction
H488s -Cutter for The sun also rises +
R464 -letter and number from Reynolds’ Cutter (R464) + workmark
Ex.: a book on Leonardo da Vinci’s Last supper by Leo Steinberg (main entry)
The first 6xx is 600 00 Leonardo, ‡c da Vinci, ‡d 1452-1519. ‡t Last supper.
759.9 -Dewey for Italian painting
L581L -Cutter for Leonardo with work mark for “Last supper” (use capital L to distinguish it from numeral one 1) +
S819L -letter and number from Steinberg’s Cutter (S819) + workmark =