Weddell, B. J. (2002). Conserving living natural resources: In the context of a changing world. Cambridge Univ. Pr.
Cita Chicago (17th ed.)Weddell, Bertie Josephson. Conserving Living Natural Resources: In the Context of a Changing World. Cambridge: Cambridge Univ. Pr, 2002.
Cita MLA (9th ed.)Weddell, Bertie Josephson. Conserving Living Natural Resources: In the Context of a Changing World. Cambridge Univ. Pr, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.