Duncan, R. Ideas of the Meaning of form ; Often I am permitted to return to a meadow: Robert Duncan. American Poetologics and Poems by Twentieth-Century Poets.(1996).

Duncan, Robert. "Ideas of the Meaning of Form ; Often I Am Permitted to Return to a Meadow: Robert Duncan." American Poetologics and Poems by Twentieth-Century Poets.(1996) .

Duncan, Robert. "Ideas of the Meaning of Form ; Often I Am Permitted to Return to a Meadow: Robert Duncan." American Poetologics and Poems by Twentieth-Century Poets.(1996), .