Brewster, Royce E.Guidance Workers Certification Requirements. U.S. Department of Health, Education, and Welfare, Bull., No. 22, 1957.
2.
Crow, Lester D. and Alice Crow.An Introduction to Guidance, New York : American Book Co. 1960.
3.
Jones, Arthur J., and Leonard M. Miller. "The National Picture of Pupil Personnel and Guidance Services in 1953," THE BULLETIN of the National Association of Secondary-School Principals, Vol. 38, No. 200, Feb. 1954 .
4.
MacMinn, Paul and Roland G. Ross.Status of Preparation Programs for Guidance and Student Personnel Workers. U.S. Department of Health, Education, and Welfare, Bull. No. 7, 1959 .
5.
Miller, Leonard M. "Trends in the Certification of High School Counselors," Journal of the National Association of Deans of Women, Vol. 19, No. 1, Oct. 1955.
6.
Woellner, Robert C. and M. Aurilla Wood.Requirements for Certification of Teachers, Counselors, Librarians, and Administrators for Elementary and Secondary Schools and Junior Colleges, 22nd edition. 1957-58.
7.
Woellner, Robert C. and M. Aurilla Wood.Requirements for Certification of Teachers, Counselors, Librarians, and Administrators for Elementary and Secondary Schools and Junior Colleges, 24th edition. 1959-60.