APA-čujuhus (7. p.)
Ford, D. H., & Lerner, R. M. (1992). Developmental systems theory: An integrative approach. Sage.
Chicago-čujuhus (17. p.)
Ford, Donald H., juo Richard M. Lerner. Developmental Systems Theory: An Integrative Approach. London: Sage, 1992.
MLA-čujuhus (9. p.)
Ford, Donald H., juo Richard M. Lerner. Developmental Systems Theory: An Integrative Approach. Sage, 1992.
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