APA ציטוט

Drubbel, B. (2011). The 21st century Webster's international encyclopedia: The new illustrated reference guide (2011 edition.). Typhoon Media Corporation.

Chicago Style (17th ed.) Citation

Drubbel, Bart. The 21st Century Webster's International Encyclopedia: The New Illustrated Reference Guide. 2011 edition. Naples, Florida: Typhoon Media Corporation, 2011.

ציטוט MLA

Drubbel, Bart. The 21st Century Webster's International Encyclopedia: The New Illustrated Reference Guide. 2011 edition. Typhoon Media Corporation, 2011.