Kulwicki, P. V., Schlei, E. J., & Vergamini, P. L. Weightless man: Self-rotation techniques. Armed Services Technical Information Agency.
Cita Chicago (17th ed.)Kulwicki, Philip V., Edward J. Schlei, i Paul L. Vergamini. Weightless Man: Self-rotation Techniques. Arlington, Va.: Armed Services Technical Information Agency.
Cita MLA (8th ed.)Kulwicki, Philip V., et al. Weightless Man: Self-rotation Techniques. Armed Services Technical Information Agency.
Atenció: Aquestes cites poden no estar 100% correctes.