Não informado. (1980). Abstracts of Papers Presented to the American Mathematical Society. American Mathematical Society.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Abstracts of Papers Presented to the American Mathematical Society. Providence, RI: American Mathematical Society, 1980.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Abstracts of Papers Presented to the American Mathematical Society. American Mathematical Society, 1980.
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