diff --git a/doc/resources.md b/doc/resources.md
index 8601904..af0f227 100644
--- a/doc/resources.md
+++ b/doc/resources.md
@@ -1,4 +1,4 @@
 # Resources
 
-- The GNU Make documentation page, https://www.gnu.org/software/make/manual/
-- Managing Projects with GNU Make, Third Edition, https://www.oreilly.com/openbook/make3/book/index.csp
+- [The GNU Make documentation page](https://www.gnu.org/software/make/manual/)
+- [Managing Projects with GNU Make, Third Edition](https://www.oreilly.com/openbook/make3/book/index.csp)