Gaya APA

Seabrook, J. (1993). Pioneers of change: Experiments in creating a humane society . Foreword by Jonathan Porritt. . Philadelphia: Philadelphia NSP & London.

Gaya MLA

Seabrook, Jeremy. "Pioneers of change: Experiments in creating a humane society . Foreword by Jonathan Porritt. ". Philadelphia: Philadelphia NSP & London, 1993. Buku.