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How to reference the NCBI taxonomy database

The NCBI taxonomy database is not a primary source for taxonomic or phylogenetic information. Furthermore, the database does not follow a single taxonomic treatise but rather attempts to incorporate phylogenetic and taxonomic knowledge from a variety of sources, including the published literature, web-based databases, and the advice of sequence submitters and outside taxonomy experts. Consequently, the NCBI taxonomy database is not a phylogenetic or taxonomic authority and should not be cited as such.

However, if you want to acknowledge the fact that you have used the NCBI taxonomy database and other NCBI services and databases for your research, the two following papers can be referenced:

Schoch CL, et al. NCBI Taxonomy: a comprehensive update on curation, resources and tools. Database (Oxford). 2020: baaa062. [PubMed]

Sayers EW, et al. GenBank. Nucleic Acids Res. 2019. 47(D1):D94-D99. [PubMed]