- Author: C.N. Sontakki
- Language: English
- Year: 2009
- Author: Stig Hartmann
- Language: English
- Year: 1997
- Author: Lawrence D. Gibson
- Language: English
- Year: 2016
- Author: Temi Abimbola, Christine Vallaster
- Language: English
- Year: 2007
- Author: M.N. Mishra
- Language: English
- Year: 2007
- Author: David Crick
- Language: English
- Year: 2004
- Author: Merlin Stone, Julie Abbott
- Language: English
- Year: 2002
- Author: Arch G. Woodside, Hugh Pattinson, Roger Marshall
- Language: English
- Year: 2014
- Author: Peter W. Turnbull, Stanley Paliwoda
- Language: English
- Year: 2012