APA (7th ed.) Citation

(1980). bk-Information. Blaukreuz-Verl.

Chicago Style (17th ed.) Citation

Bk-Information. Wuppertal Bern: Blaukreuz-Verl, 1980.

MLA (9th ed.) Citation

Bk-Information. Blaukreuz-Verl, 1980.

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