APA (7th ed.) Citation

Helfrich, G. (1924). Eislaufschule. Rudolf Rother.

Chicago Style (17th ed.) Citation

Helfrich, George. Eislaufschule. München: Rudolf Rother, 1924.

MLA (9th ed.) Citation

Helfrich, George. Eislaufschule. Rudolf Rother, 1924.

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