Piotrkowski, C. S. (1979). Work and the family system: A naturalistic study of working-class and lower-middle-class families. The Free Press.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Piotrkowski, Chaya S. Work and the Family System: A Naturalistic Study of Working-class and Lower-middle-class Families. The Free Press, 1979.
MLA -ийн эшлэл (9 дэх хэвлэлт)Piotrkowski, Chaya S. Work and the Family System: A Naturalistic Study of Working-class and Lower-middle-class Families. The Free Press, 1979.
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