Elliott, A. M., Thomas, C., Joynes, E. S., Hewett, W. T., Sumichrast, F. C. de, Lodeman, A., Warren, F. M., Babbitt, E. H., Grandgent, C. H., Super, O. B., Kroeh, C. F., Macgowan, W. S., &amp; Jagemann, H. C. G. von. (1893). <i>Methods of teaching modern languages: papers on the value and on methods of modern language instruction</i>. D.C. Heath &amp; co.