1. Mithun Marianne The synchronic and diachronic behavior of plops squeaks croaks sighs and moans of Mühlhäusler Pidgin and Creole Linguistics Oxford : Basil Blackwell Johanna Diminutive consonant symbolism in western North America;Peter;International Journal American Linguistics,1982
2. Kim Kong - On Sound symbolism in Korean of The ideophone in Southern Sotho Journal of African Linguistics;Kunene;Journal Linguistics,1977