Mol, Hendrik, 1919-1981
Fundamentals of phonetics II : Acoustical models generating the formants of the vowel phonemes
Mouton, 1970
 Buku Teks SO
Lobel, Jason William
Vowel fronting, raising, and backing in Luzon and North-Central Sulawesi
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2021
 Artikel Jurnal
Audi Amanda Meidi
Interferensi bahasa ibu pada pelafalan vokal Prancis? = Mother interference in French vowel pronunciation?.
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2021
 UI - Tugas Akhir
Andriyanti Dwi Putri Mulyono
Pengaruh variasi vokal dan konsonan pada makna kata tiruan Bahasa Korea = The effect of vowel and consonant variation in Korean imitation words meaning
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2016
 UI - Makalah dan Kertas Kerja
Information and Communication Technologies for Development : 14th IFIP WG 9.4 International Conference on Social Implications of Computers in Developing Countries, ICT4D 2017, Yogyakarta, Indonesia, May 22-24, 2017, Proceedings
Jyoti Choudrie, M Sirajul Islam, Fathul Wahid; Julian M Bass, Johanes Eka Priyatma
Springer, 2017
 Buku Teks SO