Okon, E. .. (2019). The World of Bats. Obafemi Awolowo University Press Limited.
Chicago-čujuhus (17. p.)Okon, Eyo .E. The World of Bats. Obafemi Awolowo University Press Limited, 2019.
MLA-čujuhus (9. p.)Okon, Eyo .E. The World of Bats. Obafemi Awolowo University Press Limited, 2019.
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