Cottle, Morris and Cottle, Shirley. 1958. The Significant Sounds of Ivatan. (In Studies in Philippine linguistics; Oceania Linguistic Monographs, 3.) Sydney: University of Sydney. 24–33pp.
@book{cottlecottle1958,
address = {Sydney},
author = {Cottle, Morris and Cottle, Shirley},
pages = {24–33},
publisher = {University of Sydney},
series = {In Studies in Philippine linguistics; Oceania Linguistic Monographs},
title = {The Significant Sounds of Ivatan},
volume = {3},
year = {1958}
}