oshima, A. (1997). Introduction to academic writing. London: Addison Wesley Longman.
Dyfyniad Arddull Chicagooshima, Alice. Introduction to Academic Writing. London: Addison Wesley Longman, 1997.
Dyfyniad MLAoshima, Alice. Introduction to Academic Writing. London: Addison Wesley Longman, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.