American Society for Psychoprophylaxis in Obstetrics. (1992). The Journal of perinatal education: An ASPO/Lamaze publication. American Society for Psychoprophylaxis in Obstetrics.
Cita Chicago (17th ed.)American Society for Psychoprophylaxis in Obstetrics. The Journal of Perinatal Education: An ASPO/Lamaze Publication. Washington, DC: American Society for Psychoprophylaxis in Obstetrics, 1992.
Cita MLA (9th ed.)American Society for Psychoprophylaxis in Obstetrics. The Journal of Perinatal Education: An ASPO/Lamaze Publication. American Society for Psychoprophylaxis in Obstetrics, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.