Dyfyniad APA

Brain Training Puzzles Difficult Book 2. Carlton Pub.

Dyfyniad Arddull Chicago

Brain Training Puzzles Difficult Book 2. London: Carlton Pub.

Dyfyniad MLA

Brain Training Puzzles Difficult Book 2. Carlton Pub.

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