To cite package 'stateMicromaps' renamed 'micromapST' in publications
use: Daniel B. Carr and Linda Williams Pickle, Visualizing Data
Patterns with Micromaps, CRC Press, 2010.

  Daniel B. Carr and Linda Williams Pickle (2010), Visualizing Data
  Patterns with Micromaps

A BibTeX entry for LaTeX users is

  @Book{,
    title = {Visualizing Data Patterns with Micromaps},
    author = {{Daniel B. Carr} and {Linda Williams Pickle} and {micromapST Author Team}},
    year = {2010},
    publisher = {CRC Press},
    isdn = {978-1420075731},
  }

  Linda Williams Pickle, James B. Pearson, Jr. and Daniel B. Carr
  (2014), micromapST: Exploring and Communicating Geospatial Patterns
  in U. S. State Data

A BibTeX entry for LaTeX users is

  @Article{micromapST-package,
    title = {micromapST: Exploring and Communicating Geospatial Patterns in U. S. State Data},
    author = {{Linda Williams Pickle} and {James B. Pearson, Jr} and {Daniel B. Carr} and {micromapST Author Team}},
    year = {2014},
    journal = {Journal of Statistical Software},
    url = {https://CRAN.R-project.org/package=micromapST},
  }