Hugo, R. Plans for altering the river: Richard Hugo. The West.(1979).
Chicago-Zitierstil (17. Ausg.)Hugo, Richard. "Plans for Altering the River: Richard Hugo." The West.(1979) .
MLA-Zitierstil (8. Ausg.)Hugo, Richard. "Plans for Altering the River: Richard Hugo." The West.(1979), .
Kontuz: berrikusi erreferentzia hauek erabili aurretik.