Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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