I think it's in C modal too (haven't tried it though) but you could always ask the author Paul Metsers via his website and he'll sell you a copy of his songbook.

Or send Nic Jones a MySpace message.

Whatever you do, take no notice of the Black Family who not only don't pay Paul Metsers any royalties but start off with 'just over the river' instead of 'Shotover River'.