@online{ timsrc, author = "Lethbridge, Julian", title = "Lecture: Language and Use - Introduction to Grammar; 1. Lesson", publisher = "Universität Tübingen", year = "2003", month = "May", day = "15", url = "https://timms.uni-tuebingen.de:443/tp/UT_20030515_001_languseaudio_0001", urldate = "2024-11-27" }