Foreman, Velma M. Grammar of Yessan-Mayo / by Velma M. Foreman. - Santa Ana, Calif. : Summer Institute of Linguistics, 1974. - iv, 304 p. - Language data. Asian-Pacific series ; no. 4 . ISBN: 0883122049 Subjects--Topical Terms: Yessan-Mayo language--Grammar. LC Class. No.: PL6621.Y4 / F6 Dewey Class. No.: 499/.12