Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Amụrụ na Fond du Lac, Wisconsin, Langacker nwetara Ph.D. ya na Mahadum Illinois na Urbana <unk> Champaign na 1966. Site na 1966 ruo 2003, ọ bụ prọfesọ nke asụsụ na Mahadum California, San Diego. Site na 1997 ruo 1999 ọ rụkwara ọrụ dịka onye isi oche nke International Cognitive Linguistics Association.  Ajụjụ: Olee afọ ikpeazụ onye Langacker kụziri ihe na Mahadum California?
Afọ 2003