@misc{indiciae7f549fae4529,
  title = {Representing general theoretical concepts in structural equation models: The role of composite variables},
  author = {J.B. Grace and K.A. Bollen},
  year = {2007},
  doi = {10.1007/s10651-007-0047-7},
  url = {https://pubs.usgs.gov/publication/70031924},
  note = {Source identifier: 70031924}
}