Jessen, M. (1998). Phonetics and phonology of tense and lax obstruents in German. John Benjamins Pub. Co..
Čikaški stil citiranja (17. izdanje)Jessen, Michael. Phonetics and Phonology of Tense and Lax Obstruents in German. Amsterdam ; Philadelphia: John Benjamins Pub. Co., 1998.
MLA način citiranja (9. izdanje)Jessen, Michael. Phonetics and Phonology of Tense and Lax Obstruents in German. John Benjamins Pub. Co., 1998.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.