Cita APA (7a ed.)
Hickman, G. C., & Hickman, S. M. The Ecology Action Guide. Benjamin Cummings.
Cita estilo Chicago (17a ed.)
Hickman, Graham C., y Susan M. Hickman. The Ecology Action Guide. San Francisco, EUA: Benjamin Cummings.
Cita MLA (9a ed.)
Hickman, Graham C., y Susan M. Hickman. The Ecology Action Guide. Benjamin Cummings.
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