Cita APA (7th ed.)

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.

Cita Chicago (17th ed.)

Helton, Sonia M., i 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.

Cita MLA (9th ed.)

Helton, Sonia M., i 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.