Levine, L. S., & Norman, M. (1991). How Could I Ever Know? Alfred Publishing Co., Inc..
Cita Chicago (17th ed.)Levine, Lucy Simon, i Marsha Norman. How Could I Ever Know? Louisville, United States: Alfred Publishing Co., Inc., 1991.
Cita MLA (9th ed.)Levine, Lucy Simon, i Marsha Norman. How Could I Ever Know? Alfred Publishing Co., Inc., 1991.
Atenció: Aquestes cites poden no estar 100% correctes.