Clapham, M. E., & Bottjer, D. J. (2007). Prolonged Permian–Triassic ecological crisis recorded by molluscan dominance in Late Permian offshore assemblages. National Academy of Sciences.
শিকাগো স্টাইলে সাইটেশনClapham, Matthew E., এবং David J. Bottjer. Prolonged Permian–Triassic Ecological Crisis Recorded By Molluscan Dominance in Late Permian Offshore Assemblages. National Academy of Sciences, 2007.
এমএলএ সাইটেশনClapham, Matthew E., এবং David J. Bottjer. Prolonged Permian–Triassic Ecological Crisis Recorded By Molluscan Dominance in Late Permian Offshore Assemblages. National Academy of Sciences, 2007.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.