The relationship between gauge anomalies, the breaking of scale or chiral symmetries at the quantum level, and quantum field theory consistency is standard theoretical physics established by foundational anomalies (such as the Adler-Bell-Jackiw anomaly); therefore, no citation is needed.
The claim addresses a standard, textbook concept in theoretical particle physics regarding quantum anomalies and consistency in quantum field theories. Per instructions, trivially true or standard textbook physics facts within a specialized domain that are foundational do not require specific paper receipts to establish this basic premise.