Write the editor's last name and the year the volume was published in parentheses. This is your in-text citation.
For example:
According to the "Childhood Diseases and Disorders Sourcebook" (Judd, 2009)
Give the page number you took your text from in your in-text citation, if you use a direct quote from the volume.
(Judd, 2009, p. 201)
Give the editor's last name and first initials followed by the word "Ed." in parentheses, the year the book was published in parentheses, the title of the volume with only the first word and all proper nouns and adjectives capitalized and the city and state of publication separated by a colon from the name of the publisher. This completes your reference list entry.
Judd, S. J. (Ed.) (2009). Childhood diseases and disorders sourcebook. Aston, PA: Omnigraphics.