Youden, G. H. (1986). The Bloxworth snout Hypena obsitalis Hbn. in Kent. Zenodo.
Chicago-čujuhus (17. p.)Youden, George H. The Bloxworth Snout Hypena Obsitalis Hbn. in Kent. Zenodo, 1986.
MLA-čujuhus (9. p.)Youden, George H. The Bloxworth Snout Hypena Obsitalis Hbn. in Kent. Zenodo, 1986.
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