Worcester, J. E., Campbell, L. J., & Worcester, S. T. (1879). A Pronouncing spelling-book of the English language: Mainly on the principles of comparison and contrast. William Ware and Company.

Worcester, Joseph E., Loomis J. Campbell, and Samuel T. Worcester. A Pronouncing Spelling-book of the English Language: Mainly on the Principles of Comparison and Contrast. Boston: William Ware and Company, 1879.

Worcester, Joseph E., et al. A Pronouncing Spelling-book of the English Language: Mainly on the Principles of Comparison and Contrast. William Ware and Company, 1879.