Ehrlich, P. R., Tobias, M., & Harte, J. (2014). Hope on Earth: A conversation. The University of Chicago Press.
Cita Chicago Style (17a ed.)Ehrlich, Paul R., Michael Tobias, y John Harte. Hope on Earth: A Conversation. Chicago: The University of Chicago Press, 2014.
Cita MLA (8a ed.)Ehrlich, Paul R., et al. Hope on Earth: A Conversation. The University of Chicago Press, 2014.
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