This episode covers the Fourth Edition Task List items D-10, D-11, D-12, D-13, and D-14, which states to use echoic training, mand training, tact training, intraverbal training, and listener training, respectively. If you want more information on these topics, check out pages 533-545 of the Cooper et al. (2007) text.
Cooper, J. O., Heron, T. E., & Heward, W. L. (2007). Applied behavior analysis (2nd ed.). Upper Saddle River, NJ: Prentice Hall.