APA引文

Helfand, L., & Naresh Kumar. (2014). They changed the world: Edison-Tesla-Bell. Kalyani Navyug Media Pvt Ltd.

Chicago Style (17th ed.) Citation

Helfand, Lewis, and Naresh Kumar. They Changed the World: Edison-Tesla-Bell. New Delhi, India: Kalyani Navyug Media Pvt Ltd, 2014.

MLA引文

Helfand, Lewis, and Naresh Kumar. They Changed the World: Edison-Tesla-Bell. Kalyani Navyug Media Pvt Ltd, 2014.

警告：這些引文格式不一定是100％准確.