Style de citation APA (7e éd.)

(美)弗里茨·吉尔伯特(Fritz Gilbert)著. (2023). 老后无忧：退休规划与心理健康指南：staying happy, active, and productive in your retired years. 中信出版集团.

Style de citation Chicago (17e éd.)

(美)弗里茨·吉尔伯特(Fritz Gilbert)著. 老后无忧：退休规划与心理健康指南：staying Happy, Active, and Productive in Your Retired Years. 中信出版集团, 2023.

Style de citation MLA (8e éd.)

(美)弗里茨·吉尔伯特(Fritz Gilbert)著. 老后无忧：退休规划与心理健康指南：staying Happy, Active, and Productive in Your Retired Years. 中信出版集团, 2023.

Attention : ces citations peuvent ne pas être correctes à 100%.