Cita APA (7a ed.)

Acker, M. (2023). Speak with confidence: Overcome self-doubt, communicate clearly, and inspire your audience ([First edition].). Ascent Audio.

Cita Chicago Style (17a ed.)

Acker, Mike. Speak with Confidence: Overcome Self-doubt, Communicate Clearly, and Inspire Your Audience. [First edition]. [Place of publication not identified]: Ascent Audio, 2023.

Cita MLA (9a ed.)

Acker, Mike. Speak with Confidence: Overcome Self-doubt, Communicate Clearly, and Inspire Your Audience. [First edition]. Ascent Audio, 2023.