APA način citiranja (7. izdanje)

Heppell, M. How to Retire 10 Years Early: Your Plan for Less Work and More Life. Pearson Education UK.

Čikaški stil citiranja (17. izdanje)

Heppell, Michael. How to Retire 10 Years Early: Your Plan for Less Work and More Life. Pearson Education UK.

MLA način citiranja (8. izdanje)

Heppell, Michael. How to Retire 10 Years Early: Your Plan for Less Work and More Life. Pearson Education UK.