WHO. (1993). Environmental health criteria; N.140: Polychlorinated biphenyls and terphenyls. Geneva: WHO.
শিকাগো স্টাইলে সাইটেশনWHO. Environmental Health Criteria; N.140: Polychlorinated Biphenyls and Terphenyls. Geneva: WHO, 1993.
এমএলএ সাইটেশনWHO. Environmental Health Criteria; N.140: Polychlorinated Biphenyls and Terphenyls. Geneva: WHO, 1993.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.