Edward Stein 
Forms of Desire [PDF ebook] 
Sexual Orientation and the Social Constructionist Controversy

Perhaps the foremost issue in the emerging area of inquiry known as lesbian and gay studies is the social constructionist controversy. Social constructionism is the view that the categories of sexual orientation are cultural constructs rather than naturally universal categories.
Forms of Desire brings together important essays by social constructionists and their critics, representing several disciplines and approaches to this debate about the history and science of sexuality.