APA引文

Schafer, J. (2007). Helicopter maintenance. Jeppesen.

芝加哥风格引文

Schafer, Joe. Helicopter Maintenance. United States: Jeppesen, 2007.

MLA引文

Schafer, Joe. Helicopter Maintenance. Jeppesen, 2007.

警告：这些引文格式不一定是100％准确.