APA引文

Drubbel, B. (2003). The 21st century Webster's international encyclopedia: The new illustrated reference guide. Trident Press International.

芝加哥风格引文

Drubbel, Bart. The 21st Century Webster's International Encyclopedia: The New Illustrated Reference Guide. Naples, Fla: Trident Press International, 2003.

MLA引文

Drubbel, Bart. The 21st Century Webster's International Encyclopedia: The New Illustrated Reference Guide. Trident Press International, 2003.

警告:这些引文格式不一定是100%准确.