APA (7th ed.) Citation

(1982). Zumstein Briefmarken-Katalog. Hertsch&Co.

Chicago Style (17th ed.) Citation

Zumstein Briefmarken-Katalog. Bern: Hertsch&Co, 1982.

MLA (9th ed.) Citation

Zumstein Briefmarken-Katalog. Hertsch&Co, 1982.

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