Lacy, D. M. (1965). Freedom and communications: Dan Mabry Lacy (2nd ed.). University of Illinois Press.
Lua i Stíl Chicago (17ú heag.)Lacy, Dan Mabry. Freedom and Communications: Dan Mabry Lacy. 2nd ed. Urbana: University of Illinois Press, 1965.
Lua MLA (9ú heag.)Lacy, Dan Mabry. Freedom and Communications: Dan Mabry Lacy. 2nd ed. University of Illinois Press, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.