APA (7th ed.) Citation

(1990). Schulsport in Nordrhein-Westfalen, Schuljahr 1990/91.

Chicago Style (17th ed.) Citation

Schulsport in Nordrhein-Westfalen, Schuljahr 1990/91. Düsseldorf, 1990.

MLA (9th ed.) Citation

Schulsport in Nordrhein-Westfalen, Schuljahr 1990/91. 1990.

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