Replace ISBN-10 with ISBN-13 in the bibliography

Witiko · Nov 9, 2023 · ae61331 · ae61331
1 parent 0f5662a
commit ae61331
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/markdown.dtx b/markdown.dtx
@@ -763,7 +763,7 @@ abbr {
   author    = {Knuth, Donald Ervin},
   year      = {1986},
   title     = {\TeX: The Program},
-  isbn      = {0-201-13437-7},
+  isbn      = {978-0-201-13437-7},
   pagetotal = {xvi, 594},
   series    = {Computers \& Typesetting},
   volume    = {B},
@@ -779,7 +779,7 @@ abbr {
   author    = {Victor Eijkhout},
   title     = {\TeX{} by Topic},
   subtitle  = {A \TeX nician's Reference},
-  isbn      = {0-201-56882-0},
+  isbn      = {978-0-201-56882-0},
   pagetotal = {307},
   date      = {1992-02-01},
   location  = {Wokingham, England},