Sugiyono
Stratifikasi sosial interferensi fonetis bahasa Sunda-Indonesia = The Social stratification od Sundanese-Indonesian phonetic interference
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 1996
 UI - Tesis Membership
Brandenstein, Wilhelm
Einfuhrung in die phonetik und phonologie
Gerold, 1950
 Buku Teks SO
Romadhani
Elements of general phonetics
Aldine, 1968
 Buku Teks SO
Mol, Hendrik, 1919-1981
Fundamentals of phonetics I: the organ of hearing
Mouton, 1963
 Buku Teks SO
Mol, Hendrik, 1919-1981
Fundamentals of phonetics II : Acoustical models generating the formants of the vowel phonemes
Mouton, 1970
 Buku Teks SO