Rowley, J. J. L., V. Q. Dau, T. T. Nguyen, T. T. Cao, and S. van Nguyen. “A New Species of Gracixalus (Anura: Rhacophoridae) With a Hyperextended Vocal Repertoire from Vietnam”. Zootaxa, vol. 3125, no. 1, Dec. 2011, pp. 22–38, doi:10.11646/zootaxa.3125.1.2.