Language: Its Nature, Development and Origin

LANGUAGE ITS NATURE DEVELOPMENT AND ORIGIN
Articulation of Speech Sounds (Marburg: Elwert)
Studier over engelske kasus (out of print)
Chaucers liv og digtning (out of print)
Progress in Language (out of print)
Fonetik (Copenhagen: Gyldendal)
How to Teach a Foreign Language (London: George Allen & Unwin)
Lehrbuch der Phonetik (Leipzig: Teubner)
Phonetische Grundfragen (Leipzig: Teubner)
Growth and Structure of the English Language (Leipzig: Teubner)