Não informado. (2000). Transactions of the Illinois State Academy of Science. Illinois State Academy of Science.
Citação do estilo Chicago (17ª ed.)Não informado. Transactions of the Illinois State Academy of Science. Springfield, Ill: Illinois State Academy of Science, 2000.
Citação MLA (8ª ed.)Não informado. Transactions of the Illinois State Academy of Science. Illinois State Academy of Science, 2000.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.