Dyfyniad APA

Rowling, J. K. (1997). Harry Potter and the philosopher's stone. London: Bloomsbury.

Dyfyniad Arddull Chicago

Rowling, Joanne K. Harry Potter and the Philosopher's Stone. London: Bloomsbury, 1997.

Dyfyniad MLA

Rowling, Joanne K. Harry Potter and the Philosopher's Stone. London: Bloomsbury, 1997.

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