Dyfyniad APA

Trudgill, P., & Hannah, J. (2008). International English: A guide to varieties of standard English (5th edition.). Hodder Education.

Dyfyniad Arddull Chicago

Trudgill, Peter, and Jean Hannah. International English: A Guide to Varieties of Standard English. 5th edition. London: Hodder Education, 2008.

Dyfyniad MLA

Trudgill, Peter, and Jean Hannah. International English: A Guide to Varieties of Standard English. 5th edition. Hodder Education, 2008.

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