Luscombe, T. (2019). Learning German (badly). Lightning Source Inc.
Chicago-Zitierstil (17. Ausg.)Luscombe, Tim. Learning German (badly). London: Lightning Source Inc, 2019.
MLA-Zitierstil (8. Ausg.)Luscombe, Tim. Learning German (badly). Lightning Source Inc, 2019.
警告：这些引文格式不一定是100％准确.