| The genera Tectarius and Echininus in the Western Atlantic |
| Clench, W.J.; Abbott, R.T. (1942). The genera Tectarius and Echininus in the Western Atlantic Johnsonia: Monographs of the marine mollusks of the Western Atlantic, 1(4) Department of Mollusks, Museum of Comparative Zoology: Cambridge. 4 pp. |
| Deel van: Clench, W.J. (Ed.) Johnsonia: Monographs of the marine mollusks of the Western Atlantic. Department of Mollusks, Museum of Comparative Zoology: Cambridge, meer |
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