Cita APA (7a ed.)

Hill, N., & Abernathy, C. (2020). Napoleon Hill's First Editions (1st edition.). Ascent Audio.

Cita Chicago Style (17a ed.)

Hill, Napoleon, y Chris Abernathy. Napoleon Hill's First Editions. 1st edition. Ascent Audio, 2020.

Cita MLA (8a ed.)

Hill, Napoleon, y Chris Abernathy. Napoleon Hill's First Editions. 1st edition. Ascent Audio, 2020.