Dyfyniad APA

(2017). Grumpy Cat's first worst Christmas / by Christy Webster ; illustrated by Steph Laberis.

Dyfyniad Arddull Chicago

Grumpy Cat's First Worst Christmas / by Christy Webster ; Illustrated by Steph Laberis. 2017.

Dyfyniad MLA

Grumpy Cat's First Worst Christmas / by Christy Webster ; Illustrated by Steph Laberis. 2017.

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