Cita APA

Sobel, L. A., & Sobel, L. A. (1965). Space: From Sputnik to Gemnini. New York, New York: Facts on File.

Citación estilo Chicago

Sobel, Lester A., y Lester A. Sobel. Space: From Sputnik to Gemnini. New York, New York: Facts on File, 1965.

Cita MLA

Sobel, Lester A., y Lester A. Sobel. Space: From Sputnik to Gemnini. New York, New York: Facts on File, 1965.