Não informado. (1999). Metallurgical abstracts on light metals and alloys. Light Metal Educational Foundation.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Metallurgical Abstracts on Light Metals and Alloys. Osaka, Japão: Light Metal Educational Foundation, 1999.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Metallurgical Abstracts on Light Metals and Alloys. Light Metal Educational Foundation, 1999.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.