1 1981,第25頁. sfn error: no target: CITEREFHistoric_Structure_Report_Volume_11981 (help) Byrd Dedicates Bennett Air Field (PDF). 纽约时报. June 27, 1930 [December
ISBN 3642228380, (原始内容存档于2013-12-31) Solar System Exploration: Missions: By Target: Our Solar System: Past: Helios 2. [2012-02-19]. (原始内容存档于2008-10-05).