Cita APA (7th ed.)
Whittier, J. G., & Warren, R. P. (1971). John Greenleaf Whittier's poetry: An appraisal and a selection. University of Minnesota Press.
Cita Chicago (17th ed.)
Whittier, John Greenleaf, i Robert Penn Warren. John Greenleaf Whittier's Poetry: An Appraisal and a Selection. Minneapolis: University of Minnesota Press, 1971.
Cita MLA (9th ed.)
Whittier, John Greenleaf, i Robert Penn Warren. John Greenleaf Whittier's Poetry: An Appraisal and a Selection. University of Minnesota Press, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.