Stieglitz, F. (1970). Progressive audio lingual drills in english. A Regents Publications.
Čikaški stil citiranja (17. izdanje)Stieglitz, Francine. Progressive Audio Lingual Drills in English. New York: A Regents Publications, 1970.
MLA način citiranja (9. izdanje)Stieglitz, Francine. Progressive Audio Lingual Drills in English. A Regents Publications, 1970.
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