References
Photographs taken by Paul have been used by:
- Algemeen Dagblad
- Beal
- Bl.ad o.ver k.limmen
- Black Diamond Equipment
- Cave Events Arnhem
- Cedar Creek
- 7 Continenten & Bergen - Jan Notten
- Dagblad de Limburger
- De Rock Warrior’s Way - Arno Ilgner
- Disney XD Magazine
- Domein de Wijngaardsberg
- Duracell Batteries
- Dutch Mountain Film Festival
- Fit & Mind
- FOTO
- Freyr gids - Ruben Beckers & Marc Bott
- Graviton Bouldergym in Sittard
- Hoogtelijn
- Hoger dan hoog - Dick Gebuys
- I-VY Klimcentrum Sittard
- International Federation of Sport Climbing (IFSC)
- Klettern
- Klimhal Amsterdam
- Klimmers Lifestyle Magazine
- La Sportiva
- Limits
- LOWA
- Mountain Network in Amsterdam
- Neoliet Klimcentrum Heerlen
- Nutricia (Numico)
- Ontmoet Anna
- Panico Verlag / Frankenjura Band 1 & 2 - Sebastian Schwertner
- Provincie Limburg (Nederland)
- ROCCA Sport & Adventure Gulpen
- Rock Climbing Atlas, South Western Europe - Marloes van den Berg
- VVV Zuid-Limburg
- Wandelgidsen ‘Limburg te voet’ - VAV