Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
nssdc.gsfc.nasa.gov
Pioneer 0. US National Space Science Data Center. [3 December 2013]. (原始内容存档于2021-12-19).
Pioneer 1. US National Space Science Data Center. [3 December 2013]. (原始内容存档于2022-04-05).
Pioneer 2. US National Space Science Data Center. [3 December 2013]. (原始内容存档于2022-02-09).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Pioneer 0. US National Space Science Data Center. [3 December 2013]. (原始内容存档于2021-12-19).
Wade, Mark. Luna E-1. Encyclopedia Astronautica. [3 December 2013]. (原始内容存档于22 December 2010).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Pioneer 1. US National Space Science Data Center. [3 December 2013]. (原始内容存档于2022-04-05).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Wade, Mark. Luna E-1. Encyclopedia Astronautica. [3 December 2013]. (原始内容存档于22 December 2010).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Pioneer 2. US National Space Science Data Center. [3 December 2013]. (原始内容存档于2022-02-09).
Siddiqi, Asif A. 1958(PDF). Deep Space Chronicle: A Chronology of Deep Space and Planetary Probes 1958–2000. Monographs in Aerospace History, No. 24. NASA History Office. 2002: 17–19 [2022-01-06]. (原始内容(PDF)存档于2013-02-12).
Wade, Mark. Luna E-1. Encyclopedia Astronautica. [3 December 2013]. (原始内容存档于22 December 2010).