APA (7th ed.) Citation

Biehringer, H. (1979). Present perfect or past tense (2. Aufl.). Bayer.Schulbuch-Verl.

Chicago Style (17th ed.) Citation

Biehringer, Hans. Present Perfect or Past Tense. 2. Aufl. München: Bayer.Schulbuch-Verl, 1979.

MLA (9th ed.) Citation

Biehringer, Hans. Present Perfect or Past Tense. 2. Aufl. Bayer.Schulbuch-Verl, 1979.

Warning: These citations may not always be 100% accurate.