APA引文

Sullivan, G. (2020). Scholastic book of presidents 2020. Scholastic Inc..

Chicago Style (17th ed.) Citation

Sullivan, George. Scholastic Book of Presidents 2020. New York, NY: Scholastic Inc., 2020.

MLA引文

Sullivan, George. Scholastic Book of Presidents 2020. Scholastic Inc., 2020.

警告：這些引文格式不一定是100％准確.