Lua APA (7ú heag.)

BEAUMONT, P. (1989). Dryland: Enviromental management and development. Routledge.

Lua i Stíl Chicago (17ú heag.)

BEAUMONT, Peter. Dryland: Enviromental Management and Development. London: Routledge, 1989.

Lua MLA (9ú heag.)

BEAUMONT, Peter. Dryland: Enviromental Management and Development. Routledge, 1989.

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