APA-Zitierstil (7. Ausg.)

(2019). Self-Discipline: Develop Daily Habits to Program Your Mind, Build Mental Toughness, Self-Confidence and WillPower. Independently Published.

Chicago-Zitierstil (17. Ausg.)

Self-Discipline: Develop Daily Habits to Program Your Mind, Build Mental Toughness, Self-Confidence and WillPower. USA: Independently Published, 2019.

MLA-Zitierstil (9. Ausg.)

Self-Discipline: Develop Daily Habits to Program Your Mind, Build Mental Toughness, Self-Confidence and WillPower. Independently Published, 2019.

Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.