APA (7th ed.) Citation

Ballarini, R., & Plesha, M. E. (1987). The effects of crack surface friction and roughness on crack tip stress fields. National Aeronautics and Space Administration, Lewis Research Center.

Chicago Style (17th ed.) Citation

Ballarini, Robert, and Michael E. Plesha. The Effects of Crack Surface Friction and Roughness on Crack Tip Stress Fields. Cleveland, Ohio: National Aeronautics and Space Administration, Lewis Research Center, 1987.

MLA (9th ed.) Citation

Ballarini, Robert, and Michael E. Plesha. The Effects of Crack Surface Friction and Roughness on Crack Tip Stress Fields. National Aeronautics and Space Administration, Lewis Research Center, 1987.