diff --git a/README.md b/README.md
index 082750c..0c156db 100644
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+++ b/README.md
@@ -273,6 +273,8 @@ _________________
 - [C Programming for Beginners | Full Course](https://www.youtube.com/watch?v=ssJY5MDLjlo)
 - [C Programming Tutorials (YouTube Playlist)](https://www.youtube.com/playlist?list=PLA1FTfKBAEX4hblYoH6mnq0zsie2w6Wif)
 - [💎 The C Programming Language -  Brian W. Kernighan, Dennis M. Ritchie ](https://www.amazon.com/dp/0131103628?ref_=cm_sw_r_cp_ud_dp_KRZ8M1WTXWVG0HMSRBXA)
+- [newlib C Library Documentation](https://sourceware.org/newlib/docs.html)
+- [The GNU C Library (glibc)](https://www.gnu.org/software/libc/documentation.html)
 - [C How to Program -  Paul Deitel, Harvey Deitel ](https://deitel.com/c-how-to-program-9-e/)
 - [Effective C - An Introduction to Professional C Programming - Robert C. Seacord](https://nostarch.com/Effective_C)