To cite glmmTMB in publications use one or both of the following:

Mollie E. Brooks, Kasper Kristensen, Koen J. van Benthem, Arni Magnusson, Casper W. Berg, Anders Nielsen, Hans J. Skaug, Martin Maechler, Benjamin M. Bolker (2017). Modeling Zero-Inflated Count Data With glmmTMB. bioRxiv preprint bioRxiv:132753; doi: https://doi.org/10.1101/132753

Arni Magnusson, Hans J. Skaug, Anders Nielsen, Casper W. Berg, Kasper Kristensen, Martin Maechler, Koen J. van Bentham, Benjamin M. Bolker and Mollie E. Brooks (2017). glmmTMB: Generalized Linear Mixed Models using Template Model Builder. R package version 0.1.3. https://github.com/glmmTMB

Corresponding BibTeX entries:

  @Article{,
    author = {{Brooks} and Mollie E. and {Kristensen} and {Kasper} and
      {van Benthem} and Koen J. and {Magnusson} and {Arni} and {Berg}
      and Casper W. and {Nielsen} and {Anders} and {Skaug} and Hans J.
      and {Maechler} and {Martin} and {Bolker} and Benjamin M.},
    title = {Modeling Zero-Inflated Count Data With glmmTMB},
    year = {2017},
    url = {http://biorxiv.org/content/early/2017/05/01/132753},
    eprint =
      {http://biorxiv.org/content/early/2017/05/01/132753.full.pdf},
    journal = {bioRxiv preprint bioRxiv:132753},
    archiveprefix = {bioRxiv},
  }
  @Manual{,
    title = {{glmmTMB}: Generalized Linear Mixed Models using Template
      Model Builder},
    author = {Arni Magnusson and Hans J. Skaug and Anders Nielsen and
      Casper W. Berg and Kasper Kristensen and Martin Maechler and Koen
      J. {van Bentham} and Benjamin M. Bolker and Mollie E. Brooks},
    year = {2017},
  }