American Society for Psychoprophylaxis in Obstetrics. (1992). The Journal of perinatal education: An ASPO/Lamaze publication. American Society for Psychoprophylaxis in Obstetrics.
Chicago-čujuhus (17. p.)American Society for Psychoprophylaxis in Obstetrics. The Journal of Perinatal Education: An ASPO/Lamaze Publication. Washington, DC: American Society for Psychoprophylaxis in Obstetrics, 1992.
MLA-čujuhus (9. p.)American Society for Psychoprophylaxis in Obstetrics. The Journal of Perinatal Education: An ASPO/Lamaze Publication. American Society for Psychoprophylaxis in Obstetrics, 1992.
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