To cite the lattice package in publications use:
Sarkar D (2008). Lattice: Multivariate Data Visualization with R. Springer, New York. ISBN 978-0-387-75968-5, http://lmdvr.r-forge.r-project.org.
Corresponding BibTeX entry:
@Book{, title = {Lattice: Multivariate Data Visualization with R}, author = {Deepayan Sarkar}, publisher = {Springer}, address = {New York}, year = {2008}, note = {ISBN 978-0-387-75968-5}, url = {http://lmdvr.r-forge.r-project.org}, }