(2007). Janithaka Engineering (3.).
Dyfyniad Arddull ChicagoJanithaka Engineering. 3. 2007.
Dyfyniad MLAJanithaka Engineering. 3. 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.
(2007). Janithaka Engineering (3.).
Dyfyniad Arddull ChicagoJanithaka Engineering. 3. 2007.
Dyfyniad MLAJanithaka Engineering. 3. 2007.