The national research council. (1976). Systems analysis and operations research: A tool for policy and program planning for developing countries. Washington D.C: National Academy of sciences.
শিকাগো স্টাইলে সাইটেশনThe national research council. Systems Analysis and Operations Research: A Tool for Policy and Program Planning for Developing Countries. Washington D.C: National Academy of sciences, 1976.
এমএলএ সাইটেশনThe national research council. Systems Analysis and Operations Research: A Tool for Policy and Program Planning for Developing Countries. Washington D.C: National Academy of sciences, 1976.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.