Não informado. (1972). Building equipment and materials. IPC Building and Contract Journals.
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিNão informado. Building Equipment and Materials. London: IPC Building and Contract Journals, 1972.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিNão informado. Building Equipment and Materials. IPC Building and Contract Journals, 1972.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.