Halstead, L. B. (2019). Ife and Biology. Obafemi Awolowo University Press Limited.
Lua i Stíl Chicago (17ú heag.)Halstead, L. B. Ife and Biology. Obafemi Awolowo University Press Limited, 2019.
Lua MLA (9ú heag.)Halstead, L. B. Ife and Biology. Obafemi Awolowo University Press Limited, 2019.
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