Cita APA (7a ed.)
World journal of research and review [World J Res Rev] NLMUID: 101721003.
Cita Chicago Style (17a ed.)
World Journal of Research and Review [World J Res Rev] NLMUID: 101721003.
Cita MLA (9a ed.)
World Journal of Research and Review [World J Res Rev] NLMUID: 101721003.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.