Dyfyniad APA

Shree Book Centre. (2019). 501 Incredible Facts (2019.). Shree Book Centre.

Dyfyniad Arddull Chicago

Shree Book Centre. 501 Incredible Facts. 2019. Shree Book Centre, 2019.

Dyfyniad MLA

Shree Book Centre. 501 Incredible Facts. 2019. Shree Book Centre, 2019.

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