Clark, Lawrence E. 1995. Vocabulario Popoluca De Sayula. (Serie de vocabularios y diccionarios inde'igenas.) 104th edn. Summer Institute of Linguistics.
@book{pos_clark1995,
author = {Clark, Lawrence E.},
edition = {104},
publisher = {Summer Institute of Linguistics},
series = {Serie de vocabularios y diccionarios inde'igenas},
title = {Vocabulario Popoluca De Sayula},
year = {1995}
}