- Author: Theresa Willingham Jeroen de Boer
- Language: English
- Year: 2015
- Author: Theresa Willingham Chuck Stephens Steve Willingham Jeroen de Boer
- Language: English
- Year: 2017
- Author: Jelle Zeilinga de Boer Donald Theodore Sanders
- Language: English
- Year: 2007
- Author: Sjoerd J. de Boer
- Language: English
- Year: 2022
- Author: Ian Kershaw, Margriet Agricola, Margreet de Boer
- Language: Dutch
- Year: 2012
- Author: Pieter Arie Hendrik de Boer
- Language: English
- Year: 1948
- Author: Sjoerd J de Boer
- Language: English
- Year: 2021
- Author: Karin de Boer and Tinca Prunea-Bretonnet
- Language: English
- Year: 2021