APA (7th ed.) Citation

Gibson, G. (2007). King Arthur and his knights. Langenscheidt ELT.

Chicago Style (17th ed.) Citation

Gibson, George. King Arthur and His Knights. [München]: Langenscheidt ELT, 2007.

MLA (9th ed.) Citation

Gibson, George. King Arthur and His Knights. Langenscheidt ELT, 2007.