Credit book Programming in Scala

julienrf · julienrf · commit e6c3ab621a84 · 2019-04-09T13:40:10.000+02:00
diff --git a/_overviews/core/architecture-of-scala-213-collections.md b/_overviews/core/architecture-of-scala-213-collections.md
@@ -425,3 +425,10 @@ This document explains that:
 
 You now have all the required knowledge to implement
 [custom collection types]({{ site.baseurl }}/overviews/core/custom-collections.html).
+
+### Acknowledgement ###
+
+This page contains material adapted from the book
+[Programming in Scala](http://www.artima.com/shop/programming_in_scala) by
+Odersky, Spoon and Venners. We thank Artima for graciously agreeing to its
+publication.
diff --git a/_overviews/core/custom-collections.md b/_overviews/core/custom-collections.md
@@ -1010,7 +1010,7 @@ methods without having to reimplement them all over again.
 
 ### Acknowledgement ###
 
-These pages contain material adapted from the 2nd edition of
+This page contains material adapted from the book
 [Programming in Scala](http://www.artima.com/shop/programming_in_scala) by
 Odersky, Spoon and Venners. We thank Artima for graciously agreeing to its
 publication.
