Frome, M. (1998). Green ink: An introduction to environmental journalism. University of Utah Press.
Lua i Stíl Chicago (17ú heag.)Frome, Michael. Green Ink: An Introduction to Environmental Journalism. Salt Lake City, Utah: University of Utah Press, 1998.
Lua MLA (9ú heag.)Frome, Michael. Green Ink: An Introduction to Environmental Journalism. University of Utah Press, 1998.
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