To cite package 'muRL' in publications use:

Moore RT, Reeves A (2019).

muRL: Mailmerge using R, LateX, and the Web. R package version 0.1-12.

Corresponding BibTeX entry:

@Manual{, title = {muRL: Mailmerge using R, LateX, and the Web}, author = {Ryan T. Moore and Andrew Reeves}, year = {2019}, note = {R package version 0.1-12}, }