Long, Ronald W. and Diomande, Raoul S. 1968. Dialogs and Variation. In TDyula: instructional materials, intensive language courses, language instruction, tape recordings, workbooks.
@incollection{LongDiomandeDialogs1968, author = {Long, Ronald W. and Diomande, Raoul S.}, booktitle = {TDyula: instructional materials, intensive language courses, language instruction, tape recordings, workbooks}, title = {Dialogs and Variation}, year = {1968} }