The focus of ice climbing in New Zealand, in terms of short technical routes, as opposed to alpine routes, is Central Otago, notably Wye Creek and the Remarkables, near Queenstown.
In the North Island, Mt Ruapehu has a good range of ice climbing opportunities, although conditions vary considerably from year to year.
Tongariro: A Guide for Climbers and Ski-mountaineers (NZAC, 2006), by Richard Thomson
Barron Saddle – Mt Brewster: A Guide for Climbers (NZAC, 2002), by Ross Cullen
The Mount Aspiring Region (NZAC, 2009), by Alan Uren and John Cocks
Queenstown Rock, Ice and Mountains (Queenstown Climbing Club, 2008), by Guillaume Charton
The Darran Mountains: An Alpine and Rock-climbing Guide (NZAC, 2005), by Craig Jefferies