When using pwt10 in publications, please cite both the pwt10 package (released under the GPL) and the Penn World Table itself (released under the CC-BY):

Zeileis A (2023). pwt10: Penn World Table (Version 10.x). R package version 10.01-0, https://CRAN.R-project.org/package=pwt10.

To cite the Penn World Table (version 10.x), please use:

Feenstra RC, Inklaar R, Timmer MP (2015). “The Next Generation of the Penn World Table.” American Economic Review, 105(10), 3150–3182.

Corresponding BibTeX entries:

    title = {pwt10: Penn World Table (Version 10.x)},
    author = {Achim Zeileis},
    year = {2023},
    note = {R package version 10.01-0},
    url = {https://CRAN.R-project.org/package=pwt10},
    title = {The Next Generation of the Penn World Table},
    author = {Robert C. Feenstra and Robert Inklaar and Marcel P.
    year = {2015},
    journal = {American Economic Review},
    volume = {105},
    number = {10},
    pages = {3150--3182},