APA (7th ed.) Citation

Greenwood, V. D. (1990). The researcher's guide to American genealogy (2nd ed.). Genealogical Pub. Co..

Chicago Style (17th ed.) Citation

Greenwood, Val D. The Researcher's Guide to American Genealogy. 2nd ed. Baltimore, Md.: Genealogical Pub. Co., 1990.

MLA (9th ed.) Citation

Greenwood, Val D. The Researcher's Guide to American Genealogy. 2nd ed. Genealogical Pub. Co., 1990.