Dyfyniad APA
Mortimer, M. (2007). Learn Dewey Decimal Classification (Edition 22) (1st North American ed.). TotalRecall Pub..
Dyfyniad Arddull Chicago
Mortimer, Mary. Learn Dewey Decimal Classification (Edition 22). 1st North American ed. Friendswood, Tex.: TotalRecall Pub., 2007.
Dyfyniad MLA
Mortimer, Mary. Learn Dewey Decimal Classification (Edition 22). 1st North American ed. TotalRecall Pub., 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.