Billingsley, R. S., & Gitman, L. J. J. (2021). Personal Financial Planning (15th.). Cengage Learning.
Cita Chicago (17th ed.)Billingsley, Randall S., i Lawrence J. Joehnk Gitman. Personal Financial Planning. 15th. Delhi: Cengage Learning, 2021.
Cita MLA (9th ed.)Billingsley, Randall S., i Lawrence J. Joehnk Gitman. Personal Financial Planning. 15th. Cengage Learning, 2021.
Atenció: Aquestes cites poden no estar 100% correctes.