Citazione APA

Hart, R. (1979). An ecological systems conceptual framework for agricultural research and development.

Stile di citazione Chicago

Hart, R.D. An Ecological Systems Conceptual Framework for Agricultural Research and Development. 1979.

Citazione MLA

Hart, R.D. An Ecological Systems Conceptual Framework for Agricultural Research and Development. 1979.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.