Gender: the Key Concepts by Mary Evans (Editor); Carolyn Williams (Editor)

Encyclopedia of Race and Ethnic Studies by Ellis Cashmore (Editor)

Encyclopedia of Sex and Gender by Fedwa Malti-Douglas (Editor)

Encyclopedia of Ageism by Erdman B. Palmore (Editor); Diane Harris (Editor); Laurence Branch (Editor)

The Transgender Encyclopedia by Brent L. Pickett