APA

Butrica A. J., . (1997). Beyond the ionosphere: fifty years of satellite communication. Washington, D.C: National Aeronautics and Space Administration.

Chicago

Butrica Andrew J, . 1997. Beyond the ionosphere: fifty years of satellite communication. Washington, D.C: National Aeronautics and Space Administration.

Harvard

Butrica A. J., . (1997). Beyond the ionosphere: fifty years of satellite communication. Washington, D.C: National Aeronautics and Space Administration.

MLA

Butrica Andrew J, . Beyond the ionosphere: fifty years of satellite communication. Washington, D.C: National Aeronautics and Space Administration. 1997.