APA
Hahn E. a., Lomas C. W. j. a., Hargis D. E. j. a. & Vandraegen D. j. a. (1957). Basic voice training for speech. New York: McGraw-Hill.
Chicago
Hahn Elise..et al, Lomas Charles W jt author, Hargis Donald E jt author and Vandraegen Daniel jt author. 1957. Basic voice training for speech. New York: McGraw-Hill.
Harvard
Hahn E. a., Lomas C. W. j. a., Hargis D. E. j. a. and Vandraegen D. j. a. (1957). Basic voice training for speech. New York: McGraw-Hill.
MLA
Hahn Elise..et al, Lomas Charles W jt author, Hargis Donald E jt author and Vandraegen Daniel jt author. Basic voice training for speech. New York: McGraw-Hill. 1957.