diff --git a/books/free-programming-books-es.md b/books/free-programming-books-es.md
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--- a/books/free-programming-books-es.md
+++ b/books/free-programming-books-es.md
@@ -136,6 +136,7 @@
 ### Ensamblador
 
 * [Lenguaje Ensamblador para PC](https://pacman128.github.io/static/pcasm-book-spanish.pdf) - Paul A. Carter, `trl.:` Leonardo Rodríguez Mújica (PDF)
+* [Curso ASM de 80x86 por AESOFT](http://redeya.bytemaniacos.com/electronica/cursos/aesoft.htm) - Francisco Jesus Riquelme AKA AESOFT (HTML)
 
 
 ### Erlang