Nolen, J. (1909). State parks for Wisconsin: Report of John Nolen, landscape architect.
Chicago-viite (17. p.)Nolen, John. State Parks for Wisconsin: Report of John Nolen, Landscape Architect. [Madison?, 1909.
MLA-viite (8. p.)Nolen, John. State Parks for Wisconsin: Report of John Nolen, Landscape Architect. 1909.
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