Wyatt, R. (1983). Geometry. Playwrights.
Cita Chicago Style (17a ed.)Wyatt, Rachel. Geometry. Toronto, Canadá: Playwrights, 1983.
Cita MLA (9a ed.)Wyatt, Rachel. Geometry. Playwrights, 1983.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.