Não informado. (1981). Advances in Space Research. International Council of Scientific Unions, Committee on Space Research.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Advances in Space Research. Oxford, Inglaterra: International Council of Scientific Unions, Committee on Space Research, 1981.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Advances in Space Research. International Council of Scientific Unions, Committee on Space Research, 1981.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.