International Agency for Research on Cancer (IARC). Monograph on the Evaluation of Carcinogenic Risks to Humans: Some Industrial Chemicals. Volume 10: Lyon, France, 1976.
National Institute for Occupational Safety and Health (NIOSH). NIOSH Pocket Guide to Chemical Hazards: Nitroaniline. Link
PubMed: Studies on toxicological effects of nitroaniline (e.g., "Toxicity of nitroaniline isomers in rat liver cells," Journal of Hazardous Materials, 2005).