Mitchell, Ross et al 2006. How many people use ASL in the United States?: Why estimates need updating. Sign Language Studies6 (3). [1]Archived 2012-09-15 at the Wayback Machine
Mitchell, Ross et al 2006. How many people use ASL in the United States?: Why estimates need updating. Sign Language Studies6 (3). [1]Archived 2012-09-15 at the Wayback Machine