Martin S. Weinberg, Colin J. Williams, and Douglas W. Pryor, Dual Attraction: Understanding Bisexuality (New York: Oxford University Press, 1995). 9. Benoit Denizet-Lewis, “The Scientific Quest to Prove—Once and for All—That Someone Can Be Truly Attracted to Both a Man and a Woman: Bisexuality Comes Out of the Closet,” New York Times Magazine, March 23, 2014. Online as “The Scientific Quest to Prove Bisexuality Exists,” posted March 20, 2014.
