Não informado. (1926). Annual survey of american chemistry. National Research Council, Division of Chemistry and Chemical Technology.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Annual Survey of American Chemistry. New York: National Research Council, Division of Chemistry and Chemical Technology, 1926.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Annual Survey of American Chemistry. National Research Council, Division of Chemistry and Chemical Technology, 1926.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.