Warren, J. P. (1990). Walt Whitman's Language Experiment. Pennsylvania State University Press.
Cita Chicago Style (17a ed.)Warren, James Perrin. Walt Whitman's Language Experiment. University Park: Pennsylvania State University Press, 1990.
Cita MLA (8a ed.)Warren, James Perrin. Walt Whitman's Language Experiment. Pennsylvania State University Press, 1990.
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