diff --git a/doc/timezones.rdoc b/doc/timezones.rdoc
index 5b3a224d14..949e0f65c1 100644
--- a/doc/timezones.rdoc
+++ b/doc/timezones.rdoc
@@ -57,7 +57,9 @@ in the range <tt>-86399..86399</tt>:
 
 === Timezone Objects
 
-The zone value may be an object responding to certain timezone methods.
+The zone value may be an object responding to certain timezone methods, an
+instance of {Timezone}[https://github.com/panthomakos/timezone] and
+{TZInfo}[https://tzinfo.github.io] for example.
 
 The timezone methods are:
 
diff --git a/timev.rb b/timev.rb
index e710dc6990..80de049a07 100644
--- a/timev.rb
+++ b/timev.rb
@@ -66,7 +66,7 @@
 #
 #   Time.new(2002, 10, 31, 2, 2, 2, "+02:00") #=> 2002-10-31 02:02:02 +0200
 #
-# Or a timezone object:
+# Or {a timezone object}[rdoc-ref:timezones.rdoc@Timezone+Objects]:
 #
 #   zone = timezone("Europe/Athens")      # Eastern European Time, UTC+2
 #   Time.new(2002, 10, 31, 2, 2, 2, zone) #=> 2002-10-31 02:02:02 +0200