Brownell, J. (1986). Building active listening skill. Prentice Hall Pentice -Hall.
Lua i Stíl Chicago (17ú heag.)Brownell, Judi. Building Active Listening Skill. New Jersey: Prentice Hall Pentice -Hall, 1986.
Lua MLA (9ú heag.)Brownell, Judi. Building Active Listening Skill. Prentice Hall Pentice -Hall, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.