Goldsmith, John A. (Ed.), Elizabeth Hume (Ed.) and Leo Wetzels (Ed.). Tones and Features. Phonetic and Phonological Perspectives. Berlin, Boston: De Gruyter Mouton, 2011. Web. Retrieved 20 Jun. 2013, from http://www.degruyter.com/view/product/44354

Goldsmith, J. (Ed.), Hume, E. (Ed.) & Wetzels, L. (Ed.) (2011). Tones and Features. Phonetic and Phonological Perspectives. Berlin, Boston: De Gruyter Mouton. Retrieved 20 Jun. 2013, from http://www.degruyter.com/view/product/44354

Goldsmith, John A. (Ed.), Elizabeth Hume (Ed.) and Leo Wetzels (Ed.). 2011. Tones and Features. Phonetic and Phonological Perspectives. Berlin, Boston: De Gruyter Mouton. Retrieved 20 Jun. 2013, from http://www.degruyter.com/view/product/44354