Some Lettons and Willetts of Maryland and a few descendants and allied families (Layton, Leighton, Letten, Leyton, Liten, Litten, Litton, Lytton)

Chicago citation style
Watson, Estelle Clark, b. 1888. Some Lettons and Willetts of Maryland and a few descendants and allied families (Layton, Leighton, Letten, Leyton, Liten, Litten, Litton, Lytton). 1955. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/005731363. (Accessed December 11, 2018.)
APA citation style
Watson, Estelle Clark, b. 1888, (1955) Some Lettons and Willetts of Maryland and a few descendants and allied families (Layton, Leighton, Letten, Leyton, Liten, Litten, Litton, Lytton). Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/005731363
MLA citation style
Watson, Estelle Clark, b. 1888. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/005731363>.
Note: These citations are programmatically generated and may be incomplete.