Não informado. (2002). Bulletin of the Essex Institute. Essex Institute.
Style de citation Chicago (17e éd.)Não informado. Bulletin of the Essex Institute. Salem, Mass: Essex Institute, 2002.
Style de citation MLA (8e éd.)Não informado. Bulletin of the Essex Institute. Essex Institute, 2002.
Attention : ces citations peuvent ne pas être correctes à 100%.