Sands et al. 1996

Sands, Bonny, Ian Maddieson & Peter Ladefoged. 1996. The phonetic structures of Hadza. Studies in African Linguistics 25(2). 171–204.

http://elanguage.net/journals/sal/article/view/1313

@article{sandsetal1996,
  author  = {Sands, Bonny and Maddieson, Ian and Ladefoged, Peter},
  journal = {Studies in African Linguistics},
  number  = {2},
  pages   = {171–204},
  title   = {The phonetic structures of Hadza},
  url     = {http://elanguage.net/journals/sal/article/view/1313},
  volume  = {25},
  year    = {1996}
}