Dyfyniad APA

(1964). ENGLISH GRAMMAR AND EXERCISES BOOK ONE. Longman.

Dyfyniad Arddull Chicago

ENGLISH GRAMMAR AND EXERCISES BOOK ONE. Longman, 1964.

Dyfyniad MLA

ENGLISH GRAMMAR AND EXERCISES BOOK ONE. Longman, 1964.

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