Galkin, Ivan Stepanovich. 1964. Istoritsheskaja grammatika marijskogo jazyka. Joshkar-Ola.
@book{galkin1964a,
author = {Galkin, Ivan Stepanovich},
key = {Galkin 1964},
publisher = {Joshkar-Ola},
title = {Istoritsheskaja grammatika marijskogo jazyka},
year = {1964}
}