APA (7th ed.) Citation

Langenfeld, L. (1963). Erwerbung. Handbuch.

Chicago Style (17th ed.) Citation

Langenfeld, Ludwin. "Erwerbung." Handbuch 1963.

MLA (8th ed.) Citation

Langenfeld, Ludwin. "Erwerbung." Handbuch, 1963.

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