Dyfyniad APA

Watcyn-Jones, P. (2007). Group work: Intermediate. Buku Prima Penguin English.

Dyfyniad Arddull Chicago

Watcyn-Jones, Peter. Group Work: Intermediate. Harlow: Buku Prima Penguin English, 2007.

Dyfyniad MLA

Watcyn-Jones, Peter. Group Work: Intermediate. Buku Prima Penguin English, 2007.

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