Staff On this Day 15 August 1971: 'V-sign' costs rider victory "BBC The infamous gesture won him an entry in the Chambers dictionary which defined 'a Harvey Smith' as 'a V-sign with the palm inwards, signifying derision and contempt'". 2008年4月23日閲覧
Staff. American Manual Alphabet Chart Center for Disability Information & Referral (CeDIR), Indiana Institute on Disability and Community at Indiana University