Worldwatch paper / Worldwatch inst. N 95 : Apartheid's environmental tool / A.B.Durning, 1990. - 50 p. - Текст : непосредственный.
Durning A.B. Taking stock : animal farming and the environment / A.B.Durning,H.B.Brough, 1991. - 62 p. - Текст : непосредственный.