The United States Geological Survey provides guidelines for citing USGS data products (as downloaded from 'get_tiles') at: https://www.usgs.gov/faqs/how-should-i-cite-datasets-and-services-national-map To cite terrainr in publications please use:
Mahoney MJ, Beier CM, Ackerman AC (2022). “terrainr: An R package for creating immersive virtual environments.” Journal of Open Source Software, 7(69), 4060. doi:10.21105/joss.04060, https://doi.org/10.21105/joss.04060.
Corresponding BibTeX entry:
@Article{,
year = {2022},
publisher = {The Open Journal},
volume = {7},
number = {69},
pages = {4060},
author = {Michael J. Mahoney and Colin M. Beier and Aidan C.
Ackerman},
title = {{terrainr}: An R package for creating immersive virtual
environments},
journal = {Journal of Open Source Software},
doi = {10.21105/joss.04060},
url = {https://doi.org/10.21105/joss.04060},
}