Frost, R. (1964). Robert Frost's poems. Washington Square.
Cita Chicago Style (17a ed.)Frost, Robert. Robert Frost's Poems. New York, Estados Unidos: Washington Square, 1964.
Cita MLA (9a ed.)Frost, Robert. Robert Frost's Poems. Washington Square, 1964.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.