Masefield, J. R. B. (1898). Testacella haliotidea in North Staffordshire. Zenodo.
Tohutoru Kātū Chicago (17th ed.)Masefield, John R. B. Testacella Haliotidea in North Staffordshire. Zenodo, 1898.
Tohutoro MLA (9th ed.)Masefield, John R. B. Testacella Haliotidea in North Staffordshire. Zenodo, 1898.
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