Allen, V. F., & Shoemaker Francis. (1984). Progressive listening series: Exercises in listerning for comprehension and fluency ([1a. ed.].). Heredia, C.R.: BUNA.
Chicago Style CitationAllen, Virginia French, and Shoemaker Francis. Progressive Listening Series: Exercises in Listerning for Comprehension and Fluency. [1a. ed.]. Heredia, C.R.: BUNA, 1984.
MLA CitationAllen, Virginia French, and Shoemaker Francis. Progressive Listening Series: Exercises in Listerning for Comprehension and Fluency. [1a. ed.]. Heredia, C.R.: BUNA, 1984.
Warning: These citations may not always be 100% accurate.