Ford, A. L., & French, W. (1978). Robert Creeley. Twayne Publishers, A Division ofG. K. Hall & Co.
Lua i Stíl Chicago (17ú heag.)Ford, Arthur Lewis, agus Warren French. Robert Creeley. Boston: Twayne Publishers, A Division ofG. K. Hall & Co, 1978.
Lua MLA (9ú heag.)Ford, Arthur Lewis, agus Warren French. Robert Creeley. Twayne Publishers, A Division ofG. K. Hall & Co, 1978.
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