Kreppner, K., & Lerner, R. M. (1989). Family systems and life-span development. Hillsdale, N. J. [etc.] : LEA.
Chicago Style CitationKreppner, Kurt, and Richard M. Lerner. Family Systems and Life-span Development. Hillsdale, N. J. [etc.] : LEA, 1989.
MLA CitationKreppner, Kurt, and Richard M. Lerner. Family Systems and Life-span Development. Hillsdale, N. J. [etc.] : LEA, 1989.
Figyelmeztetés: Nem biztos, hogy ezek a forráshivatkozások 100%-ig pontosak.