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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)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.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.