(1995). Space physics educational outreach supplement to contract no. NASW-4621: Final report / prepared by Richard A. Copeland, C. Wesley Walter. [microform].
Chicago-viite (17. p.)Space Physics Educational Outreach Supplement to Contract No. NASW-4621: Final Report / Prepared by Richard A. Copeland, C. Wesley Walter. [microform]. 1995.
MLA-viite (9. p.)Space Physics Educational Outreach Supplement to Contract No. NASW-4621: Final Report / Prepared by Richard A. Copeland, C. Wesley Walter. [microform]. 1995.
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