Callmann, R. (1950). The law of unfair competition and trade-marks (2nd ed.). Callaghan.
Chicago Style (17. basım) AtıfCallmann, Rudolf. The Law of Unfair Competition and Trade-marks. 2nd ed. Chicago: Callaghan, 1950.
MLA (9th ed.) AtıfCallmann, Rudolf. The Law of Unfair Competition and Trade-marks. 2nd ed. Callaghan, 1950.
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