APA Alıntı

Mentrup, W. (1968). Rules of German Orthography. Bibliographisches Institut.

Chicago Stili Alıntı

Mentrup, Wolfgang. Rules of German Orthography. Zurich: Bibliographisches Institut, 1968.

MLA Alıntı

Mentrup, Wolfgang. Rules of German Orthography. Bibliographisches Institut, 1968.