APA引文
Douglass, F., & Ruffin, G. L. (2001). The life and times of Frederick Douglass. Digital Scanning.
Chicago Style (17th ed.) Citation
Douglass, Frederick, and George L. Ruffin. The Life and Times of Frederick Douglass. Scituate, Mass.: Digital Scanning, 2001.
MLA引文
Douglass, Frederick, and George L. Ruffin. The Life and Times of Frederick Douglass. Digital Scanning, 2001.
警告:這些引文格式不一定是100%准確.