diff --git a/Examples-and-Recipes.md b/Examples-and-Recipes.md
index dec4c6a..990beed 100644
--- a/Examples-and-Recipes.md
+++ b/Examples-and-Recipes.md
@@ -336,6 +336,8 @@ to_time_point(components, tp);
 ### Obtaining `y/m/d h:m:s` components from a `time_point`
 (by [ecorm](https://github.com/ecorm))
 
+The first recipe below is based on an example from [Howard Hinnant](https://github.com/HowardHinnant)'s [CppCon 2015 slides](http://schd.ws/hosted_files/cppcon2015/43/hinnant_dates.pdf) on the date library.
+
 ```c++
 using namespace date;
 auto time = std::chrono::system_clock::now();