WHO. (1997). Environmental health criteria; N.193: Phosgene. Geneva: WHO.
শিকাগো স্টাইলে সাইটেশনWHO. Environmental Health Criteria; N.193: Phosgene. Geneva: WHO, 1997.
এমএলএ সাইটেশনWHO. Environmental Health Criteria; N.193: Phosgene. Geneva: WHO, 1997.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.