Dyfyniad APA

Kirby,Stephen, & Key, P. (1985). Penguin listening skills: Student's book. New York: Penguin books.

Dyfyniad Arddull Chicago

Kirby,Stephen, và Patty Key. Penguin Listening Skills: Student's Book. New York: Penguin books, 1985.

Dyfyniad MLA

Kirby,Stephen, và Patty Key. Penguin Listening Skills: Student's Book. New York: Penguin books, 1985.

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