Payne, J. R. 1979. The Decay of Ergativity in Pamir Languages. Lingua 51: 147–186.
@book{Payne-1979,
address = {Lingua 51},
author = {Payne, J. R.},
publisher = {147–186},
title = {The Decay of Ergativity in Pamir Languages},
year = {1979}
}