APA (7th ed.) Citation

Norcross, J., & Sorensen, C. (2019). Changeology (1st edition.). Ascent Audio.

Chicago Style (17th ed.) Citation

Norcross, John, and Chris Sorensen. Changeology. 1st edition. [Erscheinungsort nicht ermittelbar]: Ascent Audio, 2019.

MLA (9th ed.) Citation

Norcross, John, and Chris Sorensen. Changeology. 1st edition. Ascent Audio, 2019.