Cita APA (7a ed.)

Perry, P., & Goyette, C. (2018). Secrets & mysteries of Christopher Columbus. Sakkara Productions.

Cita Chicago Style (17a ed.)

Perry, Paul, y Charles Goyette. Secrets & Mysteries of Christopher Columbus. [Paradise Valley, Ariz. ]: Sakkara Productions, 2018.

Cita MLA (8a ed.)

Perry, Paul, y Charles Goyette. Secrets & Mysteries of Christopher Columbus. Sakkara Productions, 2018.