Helton, S. M., & Micklo, S. J. (1997). The elementary math teacher's book of lists: With ready-to-use patterns and worksheets. Center for Applied Research in Education.
Citação do estilo Chicago (17ª ed.)Helton, Sonia M., e Stephen J. Micklo. The Elementary Math Teacher's Book of Lists: With Ready-to-use Patterns and Worksheets. West Nyack, N.Y.: Center for Applied Research in Education, 1997.
Citação MLA (9ª ed.)Helton, Sonia M., e Stephen J. Micklo. The Elementary Math Teacher's Book of Lists: With Ready-to-use Patterns and Worksheets. Center for Applied Research in Education, 1997.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.