克鲁斯 & 高欣. (2023). 21天戒掉拖延症: 15 secrets successful people know about time management : the productivity habits of 7 billionaries, 13 olympic athletes, 29 straight-a students, and 239 entrepreneurs. 民主与建设出版社有限责任公司.
Chicago-Zitierstil (17. Ausg.)克鲁斯 und 高欣. 21天戒掉拖延症: 15 Secrets Successful People Know About Time Management : The Productivity Habits of 7 Billionaries, 13 Olympic Athletes, 29 Straight-a Students, and 239 Entrepreneurs. 民主与建设出版社有限责任公司, 2023.
MLA-Zitierstil (8. Ausg.)克鲁斯 und 高欣. 21天戒掉拖延症: 15 Secrets Successful People Know About Time Management : The Productivity Habits of 7 Billionaries, 13 Olympic Athletes, 29 Straight-a Students, and 239 Entrepreneurs. 民主与建设出版社有限责任公司, 2023.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.