diff --git a/africa b/africa
index 1ef9f7f..735b00f 100644
--- a/africa
+++ b/africa
@@ -25,7 +25,6 @@
 #
 # A reliable and entertaining source about time zones is
 # Derek Howse, Greenwich time and longitude, Antique Collectors Club (1997).
-# Oxford University Press (1980).
 #
 # Previous editions of this database used WAT, CAT, SAT, and EAT
 # for +0:00 through +3:00, respectively,