A New Approach to Sight Singing, fifth edition (2011)
Perry Goldstein (Sol Berkowitz, Gabriel Fontrier, Leo Kraft, Edward Smaldone)
A definitive textbook for students at any level in the art of sight singing. The book includes simple to very difficult exercises, progressively presented, in the singing of single melodies, duets, and singing while playing the piano. The fifth edition contains newly composed exercises for training in singing atonal music and rhythm. 410 pages.
Available from W.W. Norton and Amazon