Sapir, Edward. 1921. Language. An Introduction to the study of Speech. New York: Harcourt Brace &Company.
@book{jacquesestimative-sapir21lg,
address = {New York},
author = {Sapir, Edward},
publisher = {Harcourt Brace &Company.},
title = {Language. An Introduction to the study of Speech},
year = {1921}
}