Shertzer, B., & Stone, S. C. (1976). Fundamentals of guidance (3d ed.). Houghton Mifflin.
Lua i Stíl Chicago (17ú heag.)Shertzer, Bruce, agus Shelley C. Stone. Fundamentals of Guidance. 3d ed. Boston: Houghton Mifflin, 1976.
Lua MLA (9ú heag.)Shertzer, Bruce, agus Shelley C. Stone. Fundamentals of Guidance. 3d ed. Houghton Mifflin, 1976.