APA引文

Northup, S., & Fernandez, P. J. (2013). Twelve years a slave (Unabridged.). Recorded Books Inc..

Chicago Style (17th ed.) Citation

Northup, Solomon, and Peter Jay Fernandez. Twelve Years a Slave. Unabridged. Prince Frederick: Recorded Books Inc., 2013.

MLA引文

Northup, Solomon, and Peter Jay Fernandez. Twelve Years a Slave. Unabridged. Recorded Books Inc., 2013.

警告：這些引文格式不一定是100％准確.