www.head-hunter.com

Anchor text: Headhunting and headshrinking among the Shuar

Wikipedia: Headhunting

Anchor text: Tribal Warfare and Blood Revenge

Wikipedia: Feud

Anchor text: Head Hunting: History of the Shuar

Wikipedia: Shuar

Anchor text: F.W. Up De Graff. ''Head hunters of the Amazon: Seven Years of Exploration and Adventure'', New York: Garden City 1925 pp. 273–283

Wikipedia: Human skull symbolism