Satinsky, B. M., Gifford, S. M., Crump, B. C., & Moran, M. A. (2013). Use of Internal Standards for Quantitative Metatranscriptome and Metagenome Analysis. Microbial Metagenomics, Metatranscriptomics, and Metaproteomics, 237–250. doi:10.1016/b978-0-12-407863-5.00012-5