Mammoth Book of Really Silly Jokes Humour for the whole family Tibballs, Geoff Heftet / 2009 / Engelsk
The Mammoth Book of More Dirty, Sick, X-Rated and Politically Incorrect Jokes Tibballs, Geoff Digital bok / 2018 / Engelsk
Vikinger opprinnelsen, erobringene og arven etter vikingene Tibballs, Geoff Innbundet / 2018 / Bokmål
