Williamson, J. A., & Powell, E. (2022). Going the extra mile: The "do it now" principle ([First edition].). Ascent Audio.
Cita Chicago Style (17a ed.)Williamson, Judith Ann, y Emma Powell. Going the Extra Mile: The "Do It Now" Principle. [First edition]. [Place of publication not identified]: Ascent Audio, 2022.
Cita MLA (9a ed.)Williamson, Judith Ann, y Emma Powell. Going the Extra Mile: The "Do It Now" Principle. [First edition]. Ascent Audio, 2022.
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