Internacional Council of Scientific Unions Comité International de Geophysique n(CIG). Annals of the international geophysical year: The central record of the results of this great international scientific enterprise.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিInternacional Council of Scientific Unions Comité International de Geophysique n(CIG). Annals of the International Geophysical Year: The Central Record of the Results of This Great International Scientific Enterprise.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিInternacional Council of Scientific Unions Comité International de Geophysique n(CIG). Annals of the International Geophysical Year: The Central Record of the Results of This Great International Scientific Enterprise.
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