Dyfyniad APA
Whitman, W., & Miller, E. H. (1990). Selected letters of Walt Whitman. University of Iowa Press.
Dyfyniad Arddull Chicago
Whitman, Walt, and Edwin Haviland Miller. Selected Letters of Walt Whitman. Iowa City: University of Iowa Press, 1990.
Dyfyniad MLA
Whitman, Walt, and Edwin Haviland Miller. Selected Letters of Walt Whitman. University of Iowa Press, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.