Citace podle APA

Eckholm,Erik P. (1992). Down to earth: Environment and human needs. Affiliated east west press.

Styl Chicago

Eckholm,Erik P. Down to Earth: Environment and Human Needs. New Delhi: Affiliated east west press, 1992.

Citace podle MLA

Eckholm,Erik P. Down to Earth: Environment and Human Needs. Affiliated east west press, 1992.

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