Dyfyniad APA

O'Brien, T. (2012). Little red book of perfect written English. Rupa Publications.

Dyfyniad Arddull Chicago

O'Brien, Terry. Little Red Book of Perfect Written English. New Delhi: Rupa Publications, 2012.

Dyfyniad MLA

O'Brien, Terry. Little Red Book of Perfect Written English. Rupa Publications, 2012.

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