bureau of the Census. (1949). A Chapther in Population Sampling (1949.). U.S. Government Private Office.
শিকাগো স্টাইলে সাইটেশনbureau of the Census. A Chapther in Population Sampling. 1949. America: U.S. Government Private Office, 1949.
এমএলএ সাইটেশনbureau of the Census. A Chapther in Population Sampling. 1949. U.S. Government Private Office, 1949.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.