Não informado. (2001). Annual Report of the Secretary of the State Horticultural Society of Michigan. Michigan Horticultural Society.
Chicago-viite (17. p.)Não informado. Annual Report of the Secretary of the State Horticultural Society of Michigan. Lansing, Mich: Michigan Horticultural Society, 2001.
MLA-viite (8. p.)Não informado. Annual Report of the Secretary of the State Horticultural Society of Michigan. Michigan Horticultural Society, 2001.
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