APA (7th ed.) Citation

(1977). Research in text theory: = Untersuchungen zur Texttheorie. de Gruyter.

Chicago Style (17th ed.) Citation

Research in Text Theory: = Untersuchungen Zur Texttheorie. Berlin [u.a.]: de Gruyter, 1977.

MLA (8th ed.) Citation

Research in Text Theory: = Untersuchungen Zur Texttheorie. de Gruyter, 1977.