Book (2007) - R Kloos (author), K Knijff (author), H Lammers (author), C Scheffer (author), H Tromp (author), Gerdy Verschuure-Stuip (author), G.A Verschuure-Stuip (author), G.A Verschuure (author), Gerdy Verschuure (author), G Wiebing (author), H de Wijn (author)

Book (2005) - H. Betgen (author), B. Koopmans (author), J Koopstra (author), M Lameris (author), H Lammers (author), C Scheffer (author), H Tromp (author), Gerdy Verschuure-Stuip (author), G.A Verschuure (author), Gerdy Verschuure (author), G.A Verschuure-Stuip (author), G Wiebing (author), H de Wijn (author)