In "Brew Like A Monk", pg 98, it states:
Malts: Pilsner, Munich
Hops: Hallertau, Spalt, Styrian Goldings
Primery: 5 days
Secondary: 14 days
In "Clone Brews", pg 52, there's a recipe for a Double Enghien Blonde Ale.
In "Beer Captured", pg 26, there's one for Abbey of Leffe Blond Abbey Ale.
I also have a link to this info: