Citazione Stile APA (7a Edizione)

Johnson, M. L. P. (1974). Thirty years with an idea. University of Alabama Press for the Organic School.

Citazione stile Chigago Style (17a edizione)

Johnson, Marietta Louise Pierce. Thirty Years with an Idea. University: University of Alabama Press for the Organic School, 1974.

Citatione MLA (9a ed.)

Johnson, Marietta Louise Pierce. Thirty Years with an Idea. University of Alabama Press for the Organic School, 1974.