Dyfyniad APA
Charles, J. (2012). The readers' advisory guide to mystery (2nd ed.). American Library Association.
Dyfyniad Arddull Chicago
Charles, John. The Readers' Advisory Guide to Mystery. 2nd ed. Chicago: American Library Association, 2012.
Dyfyniad MLA
Charles, John. The Readers' Advisory Guide to Mystery. 2nd ed. American Library Association, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.