diff --git a/SANE-Floating-Point.md b/SANE-Floating-Point.md
index 22b798f..7d3e272 100644
--- a/SANE-Floating-Point.md
+++ b/SANE-Floating-Point.md
@@ -1,4 +1,4 @@
-Apple created a floating point library called SANE: Standard Apple Numeric Environment. These libraries provide a low-level, direct interface and a high level, RPN stack machine based interface to the SANE library. A string conversion library provides formatting for output and input of floating point values.
+Apple created a floating point library called SANE: [Standard Apple Numeric Environment](https://archive.org/download/Apple_Numerics_Manual/Apple_Numerics_Manual.pdf). These libraries provide a low-level, direct interface and a high level, RPN stack machine based interface to the SANE library. A string conversion library provides formatting for output and input of floating point values.
 ## SANE High-Level Floating-Point Unit Library
 ```
 //