APA引文

Jacobs, A. (2009). In focus. Severn House.

Chicago Style (17th ed.) Citation

Jacobs, Anna. In Focus. Sutton, Surrey, England: Severn House, 2009.

MLA引文

Jacobs, Anna. In Focus. Severn House, 2009.

警告：這些引文格式不一定是100％准確.