Levinsion, H. (1989). Phobia free: A medical breakthrough linking 90. M. Evans.
Cita Chicago Style (17a ed.)Levinsion, Harold. Phobia Free: A Medical Breakthrough Linking 90. M. Evans, 1989.
Cita MLA (9a ed.)Levinsion, Harold. Phobia Free: A Medical Breakthrough Linking 90. M. Evans, 1989.
Precaución: Estas citas no son 100% exactas.