@misc{indiciaec48e6e230431,
  title = {The petroleum geology of Trinidad and Tobago},
  author = {Philip R. Woodside},
  year = {1981},
  doi = {10.3133/ofr81660},
  url = {https://pubs.usgs.gov/publication/ofr81660},
  note = {Source identifier: ofr81660}
}