Dyfyniad APA

Karen Ball. (2019). "Leonardo Da Vinci (Young Reading Level 3) [Paperback] [Jan 01, 2010] NILL". Usborne.

Dyfyniad Arddull Chicago

Karen Ball. "Leonardo Da Vinci (Young Reading Level 3) [Paperback] [Jan 01, 2010] NILL". Usborne, 2019.

Dyfyniad MLA

Karen Ball. "Leonardo Da Vinci (Young Reading Level 3) [Paperback] [Jan 01, 2010] NILL". Usborne, 2019.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.