GUDYKUNST WILLIAM B. (1986). INTERGROUP COMMUNICATION. EDWARD ARNOLD.
Lua i Stíl Chicago (17ú heag.)GUDYKUNST WILLIAM B. INTERGROUP COMMUNICATION. LONDON: EDWARD ARNOLD, 1986.
Lua MLA (9ú heag.)GUDYKUNST WILLIAM B. INTERGROUP COMMUNICATION. EDWARD ARNOLD, 1986.
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