Billingsley, R. (2021). Personal financial planning (15th.). Cengage learning, Delhi.
Citazione stile Chigago Style (17a edizione)Billingsley, Randy. Personal Financial Planning. 15th. Cengage learning, Delhi, 2021.
Citatione MLA (9a ed.)Billingsley, Randy. Personal Financial Planning. 15th. Cengage learning, Delhi, 2021.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.