Não informado. (1958). IGY general report. International Geophysical Year.
Chicagoスタイル(17版)引用形式Não informado. IGY General Report. Washington: International Geophysical Year, 1958.
MLA(8版)引用形式Não informado. IGY General Report. International Geophysical Year, 1958.
警告: この引用は必ずしも正確ではありません.