APA (7th ed.) Citation

(1977). Gelsenkirchener Schueler-Info: GSI. Schüler-Union, Kreisverb. Gelsenkirchen.

Chicago Style (17th ed.) Citation

Gelsenkirchener Schueler-Info: GSI. Gelsenkirchen: Schüler-Union, Kreisverb. Gelsenkirchen, 1977.

MLA (8th ed.) Citation

Gelsenkirchener Schueler-Info: GSI. Schüler-Union, Kreisverb. Gelsenkirchen, 1977.

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