National Research Council (U.S.). Board on Health Sciences Policy. Committee on Ethics Principles and Guidelines for Health Standards for Long Duration and Exploration Spacelights, Kahn, J., Liverman, C. T., & McCoy, M. A. (2014). Health standards for long duration and exploration spaceflight: Ethics principles, responsibilities, and decision framework. The National Academies Press.

National Research Council (U.S.). Board on Health Sciences Policy. Committee on Ethics Principles and Guidelines for Health Standards for Long Duration and Exploration Spacelights, Jeffrey Kahn, Catharyn T. Liverman, and Margaret A. McCoy. Health Standards for Long Duration and Exploration Spaceflight: Ethics Principles, Responsibilities, and Decision Framework. Washington, District of Columbia: The National Academies Press, 2014.

National Research Council (U.S.). Board on Health Sciences Policy. Committee on Ethics Principles and Guidelines for Health Standards for Long Duration and Exploration Spacelights, et al. Health Standards for Long Duration and Exploration Spaceflight: Ethics Principles, Responsibilities, and Decision Framework. The National Academies Press, 2014.