Solfège des Solfèges, Book 1

180 collected sight singing exercises. 

For beginners we recommend the following introductory books:

I.J. Farkas: Practical Sight Singing, Introductory Level A
https://itunes.apple.com/book/id1031094794

I.J.Farkas: Practical Sight Singing, Introductory Level B
https://itunes.apple.com/book/id1067906284

To download the same version of the book with audio samples:
https://itunes.apple.com/book/id1074205597