Não informado. (2002). Bulletin of the Geological and Natural History Survey of the Chicago Academy of Sciences. Chicago Academy of Sciences.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Bulletin of the Geological and Natural History Survey of the Chicago Academy of Sciences. Chicago, Ill: Chicago Academy of Sciences, 2002.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Bulletin of the Geological and Natural History Survey of the Chicago Academy of Sciences. Chicago Academy of Sciences, 2002.
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