@misc{indiciaeaf7eaf5d3c01,
  title = {Variation in the plastral formulae of selected turtles with comments on taxonomic utility},
  author = {J.E. Lovich and C.H. Ernst},
  year = {1989},
  doi = {10.2307/1445426},
  url = {https://pubs.usgs.gov/publication/1007436},
  note = {Source identifier: 1007436}
}