APA (7th ed.) Citation

(1972). Briefmarken-katalog zumstein. Zumstein.

Chicago Style (17th ed.) Citation

Briefmarken-katalog Zumstein. Bern: Zumstein, 1972.

MLA (9th ed.) Citation

Briefmarken-katalog Zumstein. Zumstein, 1972.

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