Dyfyniad APA
Lyman, R. L., O'Brien, M. J., & McKern, W. C. (2003). W.C. McKern and the Midwestern Taxonomic Method. University of Alabama Press.
Dyfyniad Arddull Chicago
Lyman, R. Lee, Michael J. O'Brien, and W. C. McKern. W.C. McKern and the Midwestern Taxonomic Method. Tuscaloosa: University of Alabama Press, 2003.
Dyfyniad MLA
Lyman, R. Lee, et al. W.C. McKern and the Midwestern Taxonomic Method. University of Alabama Press, 2003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.