Tiersky, E., & Tiersky, M. (1990). The USA: Customs and institutions. A survey of american culture and traditions. An advanced reader for ESL and EFL students (3a. ed.). Prentice Hall Regents.
Lua i Stíl Chicago (17ú heag.)Tiersky, Ethel, agus Martin Tiersky. The USA: Customs and Institutions. A Survey of American Culture and Traditions. An Advanced Reader for ESL and EFL Students. 3a. ed. Englewood Cliffs: Prentice Hall Regents, 1990.
Lua MLA (9ú heag.)Tiersky, Ethel, agus Martin Tiersky. The USA: Customs and Institutions. A Survey of American Culture and Traditions. An Advanced Reader for ESL and EFL Students. 3a. ed. Prentice Hall Regents, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.