Pliny, Natural History, mentions the Teutones in the same section as the Guiones (XXXVII 11); the Inguaeones are mentioned at Book IV, Chap. 27 (aka 13)
Tacitus 1876b, 62 Tacitus (1876b). The Annals. Translated by Church, Alfred John; Brodribb, William Jackson. Archived from the original on 29 September 2015. Retrieved 25 February 2020.
Tacitus 1876b, 62 Tacitus (1876b). The Annals. Translated by Church, Alfred John; Brodribb, William Jackson. Archived from the original on 29 September 2015. Retrieved 25 February 2020.