Dyfyniad APA

Harris, D. P. (1969). Testing English as a second language. McGraw-Hill.

Dyfyniad Arddull Chicago

Harris, David P. Testing English as a Second Language. New York: McGraw-Hill, 1969.

Dyfyniad MLA

Harris, David P. Testing English as a Second Language. McGraw-Hill, 1969.

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