Trích dẫn APA

Callahan, M. A., & Sexton, K. (2007). If Cumulative Risk Assessment Is the Answer, What Is the Question? National Institute of Environmental Health Sciences.

Trích dẫn kiểu Chicago

Callahan, Michael A., và Ken Sexton. If Cumulative Risk Assessment Is the Answer, What Is the Question? National Institute of Environmental Health Sciences, 2007.

Trích dẫn MLA

Callahan, Michael A., và Ken Sexton. If Cumulative Risk Assessment Is the Answer, What Is the Question? National Institute of Environmental Health Sciences, 2007.

Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.