APA (7th ed.) Citation

Perkins, C. W., & Sandorff, P. E. (2017). Optimum retro-thrust trajectories. Massachusetts Institute of Technology.

Chicago Style (17th ed.) Citation

Perkins, Charles William, and Paul E. Sandorff. Optimum Retro-thrust Trajectories. Massachusetts Institute of Technology, 2017.

MLA (9th ed.) Citation

Perkins, Charles William, and Paul E. Sandorff. Optimum Retro-thrust Trajectories. Massachusetts Institute of Technology, 2017.

Warning: These citations may not always be 100% accurate.