Cita APA (7a ed.)

Chall, J. S. (1990). The reading crisis. Harvard University Press.

Cita Chicago Style (17a ed.)

Chall, Jeanne Sternlicht. The Reading Crisis. Cambridge, Mass: Harvard University Press, 1990.

Cita MLA (9a ed.)

Chall, Jeanne Sternlicht. The Reading Crisis. Harvard University Press, 1990.

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