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