Edgerton, M. E. (2015). The 21st-century voice: Contemporary and traditional extra-normal voice (Second edition.). Rowman and Littlefield.
Style de citation Chicago (17e éd.)Edgerton, Michael Edward. The 21st-century Voice: Contemporary and Traditional Extra-normal Voice. Second edition. Lanham: Rowman and Littlefield, 2015.
Style de citation MLA (8e éd.)Edgerton, Michael Edward. The 21st-century Voice: Contemporary and Traditional Extra-normal Voice. Second edition. Rowman and Littlefield, 2015.
Attention : ces citations peuvent ne pas être correctes à 100%.