- Author: Egbert J. Bakker
- Language: English
- Year: 1988
- Author: bakker olie
- Language: Dutch
- Year: 2012
- Author: J W de Bakker, Erik de Vink
- Language: English
- Year: 1996
- Author: Marla O. Collum Barbara E. Krueger Dorothy Kostuch Dirk Bakker John Gallagher
- Language: English
- Year: 2012
- Author: Arnold B. Bakker Kevin Daniels
- Language: English
- Year: 2013
- Author: David A Armstrong II, Ryan Bakker, Royce Carroll, Christopher Hare, Keith T Poole, All authors
- Language: English
- Year: 2014
- Author: Krzysztof R Apt, J W de Bakker, J J M M Rutten
- Language: English
- Year: 1993
- Author: H. Bakker (auth.)
- Language: English
- Year: 1999
- Author: Bruce Lankford Karen Bakker Mark Zeitoun Declan Conway
- Language: English
- Year: 2013