Brooker, R. J., Widmaier, E. P., Graham, L. E., & Stiling, P. D. (2023). Biology (Sixth edition.). McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Brooker, Robert J., Eric P. Widmaier, Linda E. Graham, agus Peter D. Stiling. Biology. Sixth edition. New York: McGraw Hill, 2023.
Lua MLA (9ú heag.)Brooker, Robert J., et al. Biology. Sixth edition. McGraw Hill, 2023.
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