Curtis, H. H. (1924). Voice building and tone placing: Showing a new method of relieving injured vocal cords by tone exercises (3rd ed.). Appleton.
Citação do estilo Chicago (17ª ed.)Curtis, H. Holbrook. Voice Building and Tone Placing: Showing a New Method of Relieving Injured Vocal Cords by Tone Exercises. 3rd ed. New York: Appleton, 1924.
Citação MLA (9ª ed.)Curtis, H. Holbrook. Voice Building and Tone Placing: Showing a New Method of Relieving Injured Vocal Cords by Tone Exercises. 3rd ed. Appleton, 1924.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.