APA (7th ed.) Citation

Bäckmann, R. Sonnenschutz. Kleffmann.

Chicago Style (17th ed.) Citation

Bäckmann, Reinhard. Sonnenschutz. Bochum: Kleffmann.

MLA (9th ed.) Citation

Bäckmann, Reinhard. Sonnenschutz. Kleffmann.

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