APA (7th ed.) Citation

Briggs, M. H., Prahl, J. M., & Loparo, K. A. (2016). Improving power density of free-piston stirling engines. National Aeronautics and Space Administration, Glenn Research Center.

Chicago Style (17th ed.) Citation

Briggs, Maxwell H., Joseph M. Prahl, and Kenneth A. Loparo. Improving Power Density of Free-piston Stirling Engines. Cleveland Ohio: National Aeronautics and Space Administration, Glenn Research Center, 2016.

MLA (9th ed.) Citation

Briggs, Maxwell H., et al. Improving Power Density of Free-piston Stirling Engines. National Aeronautics and Space Administration, Glenn Research Center, 2016.