Cita APA (7th ed.)

Fisher, J., & Kayes, G. (2018). This is a voice: 99 exercises to train, project and harness the power of your voice. Wellcome Collection.

Cita Chicago (17th ed.)

Fisher, Jeremy, i Gillyanne Kayes. This Is a Voice: 99 Exercises to Train, Project and Harness the Power of Your Voice. London: Wellcome Collection, 2018.

Cita MLA (9th ed.)

Fisher, Jeremy, i Gillyanne Kayes. This Is a Voice: 99 Exercises to Train, Project and Harness the Power of Your Voice. Wellcome Collection, 2018.