Instituto Brasileiro de Informação em Ciência e Tecnologia

APA (7 ম সংস্করণ) উদ্ধৃতি

Não informado. (2001). Annual report of the United States Geological Survey. U.S. Geological Survey.

শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতি

Não informado. Annual Report of the United States Geological Survey. Washington: U.S. Geological Survey, 2001.

M.L.A (8 ম সংস্করণ) উদ্ধৃতি

Não informado. Annual Report of the United States Geological Survey. U.S. Geological Survey, 2001.