Rejea kifungu cha chini na kisha jibu swali baadaye katika lugha sawa na kifungu:  Passage: The Origins of the British <unk> A Genetic Detective Story. 2006, Constable na Robinson. ISBN 1-84529-158-1. (Paperback, 2007, Constable & Robinson. ISBN 978-1-84529-482-3).  Swali: Kitabu hicho kiliitwaje?
Chanzo cha Waingereza <unk> Hadithi ya Upelelezi wa Kijeni