Berechiah ben Natronai, h., Zwink, J., & Bos, G. (2010). Sefer ko'aḥ ha-avanim: On the virtue of the stones : Hebrew text and English translation : with a lexicological analysis of the romance terminology and source study. Brill.

Berechiah ben Natronai, ha-Nakdan, Julia Zwink, and Gerrit Bos. Sefer Ko'aḥ Ha-avanim: On the Virtue of the Stones : Hebrew Text and English Translation : With a Lexicological Analysis of the Romance Terminology and Source Study. Leiden ; Boston: Brill, 2010.

Berechiah ben Natronai, ha-Nakdan, et al. Sefer Ko'aḥ Ha-avanim: On the Virtue of the Stones : Hebrew Text and English Translation : With a Lexicological Analysis of the Romance Terminology and Source Study. Brill, 2010.