Reference: Maddieson et al. 2014

Maddieson, Ian, Sébastian Flavier, Egidio Marsico & François Pellegrino. 2014. LAPSyD: Lyon-Albuquerque Phonological Systems Databases, Version 1.1.

http://www.lapsyd.ddl.cnrs.fr/lapsyd/

@misc{maddieson2014lapsyd,
  author = {Maddieson, Ian and Flavier, Sébastian and Marsico, Egidio and Pellegrino, François},
  title  = {LAPSyD: Lyon-Albuquerque Phonological Systems Databases, Version 1.1},
  url    = {http://www.lapsyd.ddl.cnrs.fr/lapsyd/},
  year   = {2014}
}