APA (7th ed.) Citation

Nah, R. S. (1999). Fuel-optimal Earth-Mars trajectories using low-thrust exhaust-modulated plasma propulsion. [publisher not identified].

Chicago Style (17th ed.) Citation

Nah, Ren Sang. Fuel-optimal Earth-Mars Trajectories Using Low-thrust Exhaust-modulated Plasma Propulsion. [Place of publication not identified]: [publisher not identified], 1999.

MLA (9th ed.) Citation

Nah, Ren Sang. Fuel-optimal Earth-Mars Trajectories Using Low-thrust Exhaust-modulated Plasma Propulsion. [publisher not identified], 1999.