Speier, M. (1973). How to observe face-to-face communication: A sociological introduction. Goodyear Pub. Co..
Lua i Stíl Chicago (17ú heag.)Speier, Matthew. How to Observe Face-to-face Communication: A Sociological Introduction. Pacific Palisades, Calif.: Goodyear Pub. Co., 1973.
Lua MLA (8ú heag.)Speier, Matthew. How to Observe Face-to-face Communication: A Sociological Introduction. Goodyear Pub. Co., 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.