Creighton, H. C. (1983). Philosophy and the ecological problems of civilisation. Progress Publishers.
Citazione stile Chigago Style (17a edizione)Creighton, H. Campbell. Philosophy and the Ecological Problems of Civilisation. Moscow: Progress Publishers, 1983.
Citatione MLA (9a ed.)Creighton, H. Campbell. Philosophy and the Ecological Problems of Civilisation. Progress Publishers, 1983.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.