APA (7th ed.) Citation

Sippel, W. (1970). Einseitige Approximation.

Chicago Style (17th ed.) Citation

Sippel, Wilhelm. Einseitige Approximation. 1970.

MLA (9th ed.) Citation

Sippel, Wilhelm. Einseitige Approximation. 1970.

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