To cite the micromap package in publications use:
Quinn C. Payton, Michael G. McManus, Marc H. Weber, Anthony R. Olsen, and Thomas M. Kincaid (2015). micromap: A Package for Linked Micromaps. Journal of Statistical Software, 63(2), 1-16. URL http://www.jstatsoft.org/v63/i02/.
Corresponding BibTeX entry:
@Article{, title = {{micromap}: A Package for Linked Micromaps}, author = {Quinn C. Payton and Michael G. McManus and Marc H. Weber and Anthony R. Olsen and Thomas M. Kincaid}, journal = {Journal of Statistical Software}, year = {2015}, volume = {63}, number = {2}, pages = {1--16}, url = {http://www.jstatsoft.org/v63/i02/}, }