Ọ bụ onye nkuzi nke asụsụ na Mahadum California, San Diego site na 1966 ruo 2003. Site na 1997 ruo 1999 ọ rụkwara ọrụ dịka onye isi oche nke International Cognitive Linguistics Association. Ajụjụ: Afọ ole ka Langacker kụziri na Mahadum California?
Afọ 2003