Flute's up Book
The Flute Scales! Vol. 2 by Roberto Alvarez:

Scales method to explore two octaves range in the Flute. It includes Major, Harmonic, Melodic, Pentatonic, Whole tone, Chromatic scales and all kind of arpeggios: Major, Minor, Diminished 7th, Dominant 7th, Augmented, etc.
SGD$25
plus the cost of mailing