Wolverton, M. (2004). The depths of space: The story of the Pioneer planetary probes. Joseph Henry Press.
Lua i Stíl Chicago (17ú heag.)Wolverton, Mark. The Depths of Space: The Story of the Pioneer Planetary Probes. Washington, District of Columbia: Joseph Henry Press, 2004.
Lua MLA (9ú heag.)Wolverton, Mark. The Depths of Space: The Story of the Pioneer Planetary Probes. Joseph Henry Press, 2004.
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