APA (7th ed.) Citation

(1977). Wieviel düngen? DLG-Verl.

Chicago Style (17th ed.) Citation

Wieviel Düngen? Frankfurt, Main: DLG-Verl, 1977.

MLA (9th ed.) Citation

Wieviel Düngen? DLG-Verl, 1977.

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