Cita APA (7th ed.)

Ford, D. H., & Lerner, R. M. (1992). Developmental systems theory: An integrative approach. Sage.

Cita Chicago (17th ed.)

Ford, Donald H., i Richard M. Lerner. Developmental Systems Theory: An Integrative Approach. London: Sage, 1992.

Cita MLA (9th ed.)

Ford, Donald H., i Richard M. Lerner. Developmental Systems Theory: An Integrative Approach. Sage, 1992.