Dyfyniad APA

Ruth Gairns. (2002). Natural english (intermediate student's book). Oxford, NY: Oxford Univ. Press.

Dyfyniad Arddull Chicago

Ruth Gairns. Natural English (intermediate Student's Book). Oxford, NY: Oxford Univ. Press, 2002.

Dyfyniad MLA

Ruth Gairns. Natural English (intermediate Student's Book). Oxford, NY: Oxford Univ. Press, 2002.

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