APA (7th ed.) Citation

Schenk, T., Froelke, R., & Bork, I. The Wuerttemberg emigration index. Ancestry Incorp.

Chicago Style (17th ed.) Citation

Schenk, Trudy, Ruth Froelke, and Inge Bork. The Wuerttemberg Emigration Index. Salt Lake City, Utah: Ancestry Incorp.

MLA (9th ed.) Citation

Schenk, Trudy, et al. The Wuerttemberg Emigration Index. Ancestry Incorp.