APA (7th ed.) Citation

Helm, R. (1937). Deutsche Erntebräuche. Bibliograph. Inst.

Chicago Style (17th ed.) Citation

Helm, Rolf. Deutsche Erntebräuche. Leipzig: Bibliograph. Inst, 1937.

MLA (8th ed.) Citation

Helm, Rolf. Deutsche Erntebräuche. Bibliograph. Inst, 1937.

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