Johnson, M. L. P. (1974). Thirty years with an idea. University of Alabama Press for the Organic School.
Citação norma ChicagoJohnson, Marietta Louise Pierce. Thirty Years with an Idea. University: University of Alabama Press for the Organic School, 1974.
Citação norma MLAJohnson, Marietta Louise Pierce. Thirty Years with an Idea. University of Alabama Press for the Organic School, 1974.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.