APA (7th ed.) Citation

Boyatzis, R., Smith, M., Van Oosten, E., & Abrams, B. (2019). Helping People Change (1st edition.). Ascent Audio.

Chicago Style (17th ed.) Citation

Boyatzis, Richard, Melvin Smith, Ellen Van Oosten, and Barry Abrams. Helping People Change. 1st edition. [Erscheinungsort nicht ermittelbar]: Ascent Audio, 2019.

MLA (9th ed.) Citation

Boyatzis, Richard, et al. Helping People Change. 1st edition. Ascent Audio, 2019.