RT Journal Article SR Electronic(1) A1 de Bot, Kees A1 Lintsen, Kees YR 1989 T1 Perception of Own Language Proficiency by Elderly Adults JF ITL - International Journal of Applied Linguistics VO 83 IS 1 SP 51 OP 61 DO https://doi.org/10.1075/itl.83-84.05deb PB John Benjamins SN 0019-0829, AB , UL https://www.jbe-platform.com/content/journals/10.1075/itl.83-84.05deb