To cite package 'ModelMap' in publications use:

Freeman E, Frescino T (2018). ModelMap: Modeling and Map Production using Random Forest and Related Stochastic Models. USDA Forest Service, Rocky Mountain Research Station, 507 25th street, Ogden, UT, USA. elizabeth.a.freeman@usda.gov.

Corresponding BibTeX entry:

  @Manual{,
    title = {ModelMap: Modeling and Map Production using Random Forest
      and Related Stochastic Models},
    author = {Elizabeth Freeman and Tracey Frescino},
    year = {2018},
    organization = {USDA Forest Service, Rocky Mountain Research
      Station},
    address = {507 25th street, Ogden, UT, USA},
    note = {elizabeth.a.freeman@usda.gov},
  }