Jones, L., & Von Baeyer, C. (1983). Functions of American English: Communication activities for the classroom : student's book. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Jones, Leo, agus C. Von Baeyer. Functions of American English: Communication Activities for the Classroom : Student's Book. Cambridge [Cambridgeshire] ; New York: Cambridge University Press, 1983.
Lua MLA (8ú heag.)Jones, Leo, agus C. Von Baeyer. Functions of American English: Communication Activities for the Classroom : Student's Book. Cambridge University Press, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.