Chertok, L. Psychosomatic methods in painless childbirth: History, theory and practice.
Citazione stile Chigago Style (17a edizione)Chertok, León. Psychosomatic Methods in Painless Childbirth: History, Theory and Practice.
Citatione MLA (8a ed.)Chertok, León. Psychosomatic Methods in Painless Childbirth: History, Theory and Practice.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.