ヨアヒム・グルツェガ
Grzega, Joachim (2011). Hello World! Teacher Handbook Basic Global English. ISBN 9783842379725. https://books.google.com/books?id=MID3qFgxRA4C&printsec=frontcover&dq=Joachim+Grzega
Grzega, Joachim (2011). Introduction to Linguistics from a Global Perspective: An Alternative Approach to Language and Languages. ISBN 9783862880669. https://books.google.com/books?id=lM3QXwAACAAJ&dq=Joachim+Grzega
Grzega, Joachim (2001). Romania Gallica Cisalpina: Etymologisch-geolinguistische Studien zu den oberitalienisch-rätoromanischen Keltizismen. ISBN 9783110944402.