Παραπομπή APA

Carl and Martens, P. (1966). German Phonetics. Max Hueber Verlag.

Παραπομπή Chicago Style

Carl and Martens, Peter. German Phonetics. Munchen: Max Hueber Verlag, 1966.

Παραπομπή MLA

Carl and Martens, Peter. German Phonetics. Max Hueber Verlag, 1966.