Não informado. News of the Surveying and Mapping Division of ASCE. American Society of Civil Engineers.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. News of the Surveying and Mapping Division of ASCE. New York: American Society of Civil Engineers.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. News of the Surveying and Mapping Division of ASCE. American Society of Civil Engineers.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.