In Agents We Trust, but Who Do Agents Trust? Latent Source Preferences Steer LLM Generations - Khan, Mohammad Aflah; Amani, Mahsa; Das, Soumi; Ghosh, Bishwamittra; Wu, Qinyuan; Gummadi, Krishna; Gupta, Manish; Ravichander, Abhilasha (International Conference on Learning Representations, 2026)