APA (7th ed.) Citation

Vetter, H. (1977). Wieviel düngen? DLG.-Verl.

Chicago Style (17th ed.) Citation

Vetter, H. Wieviel Düngen? Frankfurt (Main): DLG.-Verl, 1977.

MLA (9th ed.) Citation

Vetter, H. Wieviel Düngen? DLG.-Verl, 1977.

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