(1968). World Data Center a Upper atmosphere Geophysics. Research Laboratories, ESSA.
Chicago Style aipamenaWorld Data Center a Upper Atmosphere Geophysics. Boulder, CO: Research Laboratories, ESSA, 1968.
MLA aipamenaWorld Data Center a Upper Atmosphere Geophysics. Research Laboratories, ESSA, 1968.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.