Dyfyniad APA

School Mathematics Project. (1969). SMP Book D. The University Press.

Dyfyniad Arddull Chicago

School Mathematics Project. SMP Book D. Cambridge: The University Press, 1969.

Dyfyniad MLA

School Mathematics Project. SMP Book D. The University Press, 1969.

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