Dyfyniad APA

Johnson, L. S. (1990). Reading in the content areas. London: New Readers Press.

Dyfyniad Arddull Chicago

Johnson, Laura Stark. Reading in the Content Areas. London: New Readers Press, 1990.

Dyfyniad MLA

Johnson, Laura Stark. Reading in the Content Areas. London: New Readers Press, 1990.

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