Não informado. (1931). Minnesota Horticulturist. Minnesota State Horticultural Society.
Style de citation Chicago (17e éd.)Não informado. Minnesota Horticulturist. Minneapolis, Minn: Minnesota State Horticultural Society, 1931.
Style de citation MLA (8e éd.)Não informado. Minnesota Horticulturist. Minnesota State Horticultural Society, 1931.
Attention : ces citations peuvent ne pas être correctes à 100%.