Sources
Books
Aichele, Tobias Huschke von Hanstein, The Racing Baron (Koenemann, 1999)
Carli, Emanuele Alberto Settant'anni de gare automibilistiche in Italia (Automobile Club d'Italia, 1967)
Casucci, Piero Racing Cars, Illustated Colour Guide (Galley Press, 1981)
Fφdisch, Jφrg-Thomas / Louis, Reinold Trips, Erinnerungen an ein Idol (Heel, 1998)
Gaascht, Christophe A. Willy Mairesse, Le Chevalier Meurtri (Nostalgia Editions, 2003)
Graaf, Peter de Race- en Sportwagens (De Alk, 1961)
Graaf, Peter de Race- en Sportwagens (De Alk, 1962)
Graaf, Peter de Race- en Sportwagens (De Alk, 1963)
Hayhoe, David / Holland, Dave Grand Prix Data Book (Duke, 1997)
Hodges, David A-Z of Formula Racing Cars 1945-1990 (Bay View Books, 1990)
Hodges, David The French Grand Prix (Temple Press, 1967)
Hodges, David The Le Mans 24 hour race (Temple Press, 1963)
Hodges, David The Monaco Grand Prix (Temple Press, 1964)
Klis, Hans van der Dwars door de Tarzanbocht (L.J.Veen, 2003)
Lang, Mike Grand Prix! Volume 1, 1950 1965 (Haynes, 1981)
Lawrence, Mike Grand Prix Cars 1945-65 (Motor Racing Publications, 1989)
Lini, Franco Formulewagens (Standaard Uitgeverij, 1970)
Montagna, Paolo The legendary Italian Grand Prix (Enimont,1990)
Naviaux, Christian Les Grand Prix de Formule 1 hors championnat du monde (Editions du Palmier, 2002)
Pitt, Colin (ed.) Belgian Grand Prix 1950-1974 (Unique Motor Books)
Pitt, Colin (ed.) Dutch Grand Prix 1958-1974 (Unique Motor Books)
Pitt, Colin (ed.) German Grand Prix 1956-1969 (Unique Motor Books)
Posthumus, Cyril The German Grand Prix (Temple Press, 1966)
Small, Steve The Grand Prix Who's Who, 2nd edition (Guinness Publishing, 1996)
Someren, Frits van Het leven van Formule 1 coureur Carel Godin de Beaufort (Aprilis, 2004)
Stanley, Louis T. The Grand Prix Year 1960 (Max Parrish, 1961)
Stanley, Louis T. Strictly Off The Record (Salamander Books, 1999)
Stewart, Ken / Reich, Norman Sun On The Grid (Bookmarque Publishing, 1967)
Thompson, John / Rabagliati, Duncan / Sheldon Paul The Formula One Record Book (Leslie Frewin, 1974)
Wiedenhoff, Rob / Heuvink, Ed (ed.) Racing Team Holland (Stichting Racing Team Holland, 2007)
Internet
Diepraam, Mattijs / Muelas, Felix 8W
Cunha, Joγo Paulo FORIX
Krejci, Martin World Sports Racing Prototypes
Φrnerdal, Stefan F2 & Le Mans Register
Articles
Apetz, Jan 'Weerzien met kasteel Maarsbergen' (in Autoselekt 1988)
Geerts, Wilfried 'Gentleman driver Carel Godin de Beaufort' (in Old Timer Magazine, nr.107, 1999)
Loubser, Andrι 'The Flying Dutchman' (in 911 & Porsche World, no.60, 1999)
Wiedenhoff, Rob 'De laatste der gentleman-coureurs' (in: Buwalda, Dirk, et al., 100 jaar autosport, 50 jaar circuit Zandvoort, NBI Publications, 1998)
Various fifties and sixties newspaper and magazine clippings from Sport Revue, Autovisie, De Telegraaf, Maas- en Roerpost and other unknown sources.