- Author: Nancy C. Kula Wyn Johnson Bert Botma (editors)
- Language: English
- Year: 2011
- Author: Peter Ladefoged
- Language: English
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- Author: Peter Ladefoged
- Language: English
- Year: 1995
- Author: Michael Ashby
- Language: English
- Author: Edmund Gussmann
- Language: English
- Year: 2002
- Author: Colin J. Ewen Harry van der Hulst
- Language: English
- Year: 2001
- Author: Francis Katamba
- Language: English
- Year: 1989
- Author: John Clark
- Language: English
- Year: 1990
- Author: Mike Davenport S. J. Hannahs
- Language: English
- Year: 2005
- Author: Martha C. Pennington
- Language: English
- Year: 2007