Office of Technology Assessment. (1985). Strategic material: Technologies to reduce U. S. import vulnerability. Washington: Office of Technology Assessment.
শিকাগো স্টাইলে সাইটেশনOffice of Technology Assessment. Strategic Material: Technologies to Reduce U. S. Import Vulnerability. Washington: Office of Technology Assessment, 1985.
এমএলএ সাইটেশনOffice of Technology Assessment. Strategic Material: Technologies to Reduce U. S. Import Vulnerability. Washington: Office of Technology Assessment, 1985.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.