Who Are Other Contributors?
There may be other people who may need to be credited in addition to the author. These people are called contributors. If their participation is important to your research or to the identification of the work, then name the other contributors in your citation.
Precede each contributor with a description of their role in the creation of the work, such as
"Editors of scholarly editions of a work and translations of a work originally published in another language are usually recorded in documentation because they play key roles" (p 37)
EXAMPLE: Whatson, Dennis. The End of the German Empire. Translated by Lydia D. Cochrine. U of Nebraska P, 2003