Lively, S. E., Pisoni, D. B., Yamada, R. A., Tohkura, Y., & Yamada, T. (1994). Training Japanese listeners to identify English /r/ and /l/. III. Long-term retention of new phonetic categories.

Lively, Scott E., David B. Pisoni, Reiko A. Yamada, Yoh’ichi Tohkura, and Tsuneo Yamada. Training Japanese Listeners to Identify English /r/ and /l/. III. Long-term Retention of New Phonetic Categories. 1994.

Lively, Scott E., et al. Training Japanese Listeners to Identify English /r/ and /l/. III. Long-term Retention of New Phonetic Categories. 1994.