Dyfyniad APA

Olsen, A. E. (2005). Academic vocabulary: Academic words. London / New York: Pearson Education.

Dyfyniad Arddull Chicago

Olsen, Amy E. Academic Vocabulary: Academic Words. London / New York: Pearson Education, 2005.

Dyfyniad MLA

Olsen, Amy E. Academic Vocabulary: Academic Words. London / New York: Pearson Education, 2005.

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