Dyfyniad APA

Gairns, R., & Redman, S. (2003). Natural english: Upper - intermediate student's book. Oxford: Oxford Univ. Press.

Dyfyniad Arddull Chicago

Gairns, Ruth, và Stuart Redman. Natural English: Upper - Intermediate Student's Book. Oxford: Oxford Univ. Press, 2003.

Dyfyniad MLA

Gairns, Ruth, và Stuart Redman. Natural English: Upper - Intermediate Student's Book. Oxford: Oxford Univ. Press, 2003.

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