diff --git a/books/free-programming-books-langs.md b/books/free-programming-books-langs.md
index e2e102dc1..7b814b598 100644
--- a/books/free-programming-books-langs.md
+++ b/books/free-programming-books-langs.md
@@ -1750,6 +1750,7 @@ Books on general-purpose programming that don't focus on a specific language are
 
 ### Octave
 
+* [Introduction to GNU Octave](https://www.wcc.vccs.edu/sites/default/files/Introduction-to-GNU-Octave.pdf) - jason Lachniet (PDF)
 * [Octave Programming](https://en.wikibooks.org/wiki/Octave_Programming_Tutorial) - Wikibooks