Massachusetts Horticultural Society, Horticultural Society of New York, & Pennsylvania Horticultural Society. Horticulture. Massachusetts Horticultural Society.
Style de citation Chicago (17e éd.)Massachusetts Horticultural Society, Horticultural Society of New York, et Pennsylvania Horticultural Society. Horticulture. Boston: Massachusetts Horticultural Society.
Style de citation MLA (8e éd.)Massachusetts Horticultural Society, et al. Horticulture. Massachusetts Horticultural Society.
Attention : ces citations peuvent ne pas être correctes à 100%.