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Iverson, Paul; Hazan, Valerie; Bannister, Kerry (2005). "Phonetic training with acoustic cue manipulations: A comparison of methods for teaching English /r/-/l/ to Japanese adults". J Acoust Soc Am. 118 (5): 3267–3278. Bibcode:2005ASAJ..118.3267I. doi:10.1121/1.2062307. PMID16334698.
Iverson, Paul; Hazan, Valerie; Bannister, Kerry (2005). "Phonetic training with acoustic cue manipulations: A comparison of methods for teaching English /r/-/l/ to Japanese adults". J Acoust Soc Am. 118 (5): 3267–3278. Bibcode:2005ASAJ..118.3267I. doi:10.1121/1.2062307. PMID16334698.
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