Thomas, David
Some Philippine language subgroupings : a lexicostatistical study / David Thomas and Alan Healey
[publisher not identified], 1962
 Buku Teks
Philippine postcolonial studies : essays on language and literature
The University of the Philippines Press, 2004
 Buku Teks
Studies in contrastive linguistics, no. 1 / edited by A. Hantson
Post-Graduate Centre, 1975
 Buku Teks
Linguistics
edited by Archibald A. Hill
Voice of America, 1969
 Buku Teks
Linguistics
edited by Anne E. Baker and Kees Hengeveld
Wiley-Blackweell, 2012
 Buku Teks SO