Stephen Banfield. Jerome Kern. Yale Broadway Masters Series. Yale University Press, 2006. Contains a section about the songs Yip wrote with Kern for the 1944 motion picture Can't Help Singing.
Caryl Brahms and Ned Sherrin.Song by Song: 14 Great Lyric Writers. England: Ross Anderson Publications, 1984. Chapter 8: "E.Y. Harburg: Somewhere Over the Rainbow," p. 118.
Caryl Flinn. Brass Diva: The Life and Legends of Ethel Merman. University of California Press, 2007. Provides details about the Paramount-Astoria film shorts in which Merman sang songs with lyrics by Yip
John Fricke, Jay Scarfone, and William Stillman. The Wizard of Oz: The Official 50th Anniversary Pictorial History. Introduction by Jack Haley, Jr. Warner, 1989.
Will Friedwald. Stardust Memories: A Biography of Twelve of America's Most Popular Songs. NY: Pantheon, 2002. Includes a chapter (p. 142) that describes how Yip helped composer Johnny Green and lyricist Edward Heymann create the lyric to their classic, "Body and Soul."